Detailed 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").
Q: Fact1: conserving water can be used for survival in a dry environment, Fact2: Deserts are hot, dry places., Question: where can conserving water be used for survival in? (A) deserts (B) our planet (C) Mountains (D) pools (E) glaciers (F) watershed (G) soils (H) clouds
A:
A