A、People find maths more difficult as they grow older. B、People find maths easier as they grow older. C、Old people take shorter

M: Mrs. Winter, I need your advice. I want to buy a dress for my wife. Can you tell me where I can get one at a reasonable price?
W: Sure, go to Richard’s. It has the latest styles and gives a 30% discount to husbands who shop alone.
Q: What do we know about Richard’s shop?

M: What about the group who study mathematics?
W: We have carried out some very interesting experiments. Although the old people take longer to learn, eventually they performed as well as the young people. But as to mathematics, that’s a different story.
Q: As to mathematics, what does the woman mean?