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: darkness has a negative impact on photosynthesis, Fact2: Plant growth is dependent on photosynthesis., Question: What has a negative impact on plant growth? (A) Pesticides (B) competition (C) bees (D) wind (E) Darkness (F) Pollution (G) disease (H) rain
E