Context: Read the description of a trait.
Zack knows how to do tricks with a jump rope.
What information supports the conclusion that Zack acquired this trait?
A. Zack won a competition at his school with his jump rope tricks.
B. Zack's sister taught him how to do tricks with a jump rope.
C. Zack has three jump ropes, each made of a different material.
Answer with the option's letter from the given choices directly.

B