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: drought is when amount of precipitation decreases, Fact2: Conclusions Floods and drought are realities of desert life., Question: What has decreased precipitation? (A) wind (B) rainforest (C) swampland (D) deserts (E) burning (F) forest (G) herbicide (H) cold air
A:
D