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").

Fact1: the color of leaves on deciduous trees usually changes in the autumn season, Fact2: Mulberry trees are deciduous., Question: What do mulberry trees do in the autumn? (A) Change colors (B) Fall over (C) Fruit (D) bloom time (E) reproduce (F) Stay green (G) spread flower seeds (H) staying warm
A