Judge the Following Sentence According to the Criteria Given Below

Judge the following sentence according to the criteria given below: The near-term prospect of developing a method of earthquake prediction is dismal BECAUSE the mechanics of earthquake generation are too complicated to predict based on our current state of knowledge.

A) The assertion and the reason are both correct, and the reason is valid.
B) The assertion and the reason are both correct, but the reason is invalid.
C) The assertion is correct, but the reason is incorrect.
D) The assertion is incorrect, but the reason is correct.
E) Both the assertion and the reason are incorrect.