Which sentence best corrects the clause fragment? 
 A.When Thomas got a new bike for his birthday. He gave his old bike to his little brother. 
 B.He gave his old bike to his little brother. When Thomas got a new bike for his birthday. 
 He gave his old bike to his little brother, when Thomas got a new bike for his C.birthday. When Thomas got a new bike for his birthday, he gave his old bike to his little brother. 
 D.Thomas gave his old bike to his little brother. When he got a new bike for his birthday.