Context: Read the description of a trait.
Dirk has a scar on his left knee.
What information supports the conclusion that Dirk acquired this trait?
A. Dirk's brother has scars on both of his knees.
B. Dirk's scar is on his left knee. His mother also has a scar on her left knee.
C. Dirk's scar was caused by an accident. He cut his leg when he fell off his skateboard.
From the given choices, choose the correct answer and respond with the letter of that choice.

C