Choose the correct letter, A, B or C. According to the Speaker, Hampstead underground station is

Hi and welcome to the walking audio tour service, which offers guided audio tours of over 30 walks around London. The full list of the walks is available on our website. You have chosen the Hampstead Heath Tour Part 1, which was, in fact, the first of the walking tours that were recorded. Your walk takes you through part of the heath, a huge, wild, open parkland where Londoners and visitors to the city can come and enjoy some leisurely and refreshing exercise. The heath is one of the gems of north London. When you enter the parkland, you will feel as if you are walking in the wild countryside, but you are actually still in an urban area.
The walking tour begins here at the exit to Hampstead underground station, which is the deepest station on the London Underground system. We hope that you enjoy your experience, whether you are on your own or sharing your walk with a companion... So let’s begin your tour. We hope you enjoy it!
If you turn right as you exit Hampstead station, and stay on the right-hand side of the road, the main thoroughfare, Heath Street, will take you up the hill to the heath itself. You are now walking away from the main shops and cafes in Hampstead village, but you can return to visit these after your walking tour for some window shopping The village is busy during the daytime and the evenings.
Now back to Heath Street. As the road winds northwards up Heath Street, you will pass some shops and restaurants on your way to the heath. When you reach the top, the first part of the heath that you will see on your right is the Vale of the Heath, which has some spectacular houses, built on the heath itself beside a large pond. If you go along a little further you will come to a fork in the road, where one road — North End Way — turns to the left and goes northwest away from the heath; and on your right is Spaniards Road, which turns north-east, cutting through the parkland. Walk along this latter road a little way and look for the first opening on your right, where a path leads you down into the wild parkland.
As you descend along the pathway, you will find that the noise of the busy road, that is just on your left, disappears completely. You might want to take off your headphones to enioy the delight of the sounds of the parkland. Don’t imagine that there is only silence! There is the noise of the trees and the wildlife. As you walk along the path, you will come across several paths coming from the right to join the path that you are on, but keep going until you come to the first fork in the path. Now take the path that goes to your left, which will bring you shortly to the open spaces around Kenwood House.