Choose the sentences that best support the topic sentence.
 The fastest land mammal is the cheetah.
 A
 Cheetahs are found in East Africa, Iran, and Afghanistan. But they are rapidly
 becoming extinct.
 B Over a short distance, cheetahs can travel as fast as 60 miles per hour. That is almost
 as fast as the highway speed limit in the United States.
 C But the ostrich is the fastest bird on land. It can go up to 45 miles per hour.
 D
 Cheetahs can run down hares, Impalas, and gazelles. After the chase, however, they
 often need a half hour to catch their breath before they eat.