Instructions: 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").
Input: Fact1: Pollination is the fertilization step in the sexual reproduction of plants., Fact2: Fertilization As far as fertilization, timing is critical., Question: When is timing critical for plants? (A) in the sexual reproduction (B) Earth's weather system (C) The flowers are pollinated (D) during the day (E) It helps them survive (F) the Earth being tilted (G) Earth revolving around the sun (H) seed dispersal
Output:
A