Context: Read the passage about Yo-Yo Ma.
Yo-Yo Ma is a famous cello player. He makes beautiful music. Yo-Yo's name comes from the Chinese word yo, which means "friendly." Yo-Yo's parents were from China. His mother was a singer, and his father was a music teacher.
Yo-Yo began playing the cello when he was only four years old. His father was his first teacher. Yo-Yo's father hoped that Yo-Yo would become a great cello player someday. Today, Yo-Yo is one of the best cello players in the world.
What instrument does Yo-Yo play?
A. the violin
B. the cello
Answer with the option's letter from the given choices directly.
Answer: B