Carl Smith collided with a concrete lamp-post while skating and suffered a skull fracture that caused a coma. When he failed to regain consciousness, his parents on August 8 consented to his life support machine being turned off.

Choose your answer: based on the paragraph above can we conclude that "Carl's coma was caused by the collision."?

OPT: A). Yes; B). It's impossible to say; C). No;
I think the answer is
A).