A、because some houses are near the gas station B、because the gas station is located in a provincial capital C、because the gas st

An insurgent suicide bomber detonated explosives strapped to his body Saturday, triggering a huge explosion at a gas station near a mosque south of Baghdad.
   Police Capt. Muthanna Khaled Ali, the provincial capital, said the gas station blast in Musayyib, about 40 miles south of Baghdad, killed 54 and wounded at least 82 others.
   In Baghdad, the Interior Ministry put the casualty count at 51 dead and 82 wounded, but the report was believed based on a preliminary count.
   Witnesses and police said the fuel tanker was moving slowly toward the pumps when an attacker ran to it and detonated his charge. A cluster of houses near the city-center gas station caught fire, the witnesses said. Gasoline stations in Iraq routinely include a number of small businesses selling tea, soft drinks and snacks and are often crowded with people.