Which of the Following Is a Proximate Cause

Which of the following is a proximate cause?

A) When the injuries to the plaintiff are not the foreseeable result of the defendant's conduct.
B) If an injury would not have occurred but for the defendant's conduct.
C) A cause that is foreseeable and "not too remote."
D) An event that is a "breach of the duty of due care" on the part of the defendant.
E) A defense to a plaintiff's action where the plaintiff has knowingly entered into a risky activity that results in injury.