Context: Read the description of a trait.
Greta has a scar on her right elbow.
What information supports the conclusion that Greta acquired this trait?
A. Greta's scar is on her right elbow. Her father also has a scar on his right elbow.
B. Greta's scar was caused by an accident. She cut her arm when she fell off her bicycle.
C. Greta's sister has a bruise from falling on her elbow.
From the given choices, select the correct answer and reply with the letter of the chosen option.
Answer: B