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: Plants detect and respond to the daily cycle of light and darkness., Fact2: All plants are of bush type., Question: what detects and responds to the daily cycle of light and darkness? (A) fens (B) apples (C) oxygen (D) Oak (E) gravity (F) amoeba (G) earth's rotation (H) bushes
A:
H