Definition: 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").
Input: Fact1: darkness has a negative impact on photosynthesis, Fact2: During a solar eclipse , the sky can get quite dark., Question: What can have a negative impact on photosynthesis? (A) disease (B) Smoking (C) Pollution (D) seed dispersal (E) solar eclipse (F) scattered light (G) cell division (H) mutation
Output:
E