In this task, you are given two facts, and a multiple-choice question. Based on the given facts, answer the question with index of the correct option (e.g, "A").
Q: Fact1: Mating is generally preceded by courtship., Fact2: Friendship usually precedes courtship, and courtship, marriage., Question: What often precedes mating? (A) A Greek letter (B) competition (C) friendship (D) birth of a child (E) death (F) Chemical energy (G) pregnancy (H) sweating
A:
C