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: lack of moisture in the air causes low amounts of rainfall, Fact2: If there is enough moisture in the clouds, rain is produced., Question: What's one reason it won't rain? (A) fissures of hot, acidic water (B) a hemisphere is tilted away from the sun (C) Warm and cold air meet (D) The clouds don't have enough water (E) The clouds have too much water (F) Too much moisture in the environment (G) decreases the freezing point (H) erosion from rivers
Output:
D