Instructions: 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: an image in a mirror is formed by reflecting light, Fact2: Reflection is the bouncing of light off of a reflective surface, such as a mirror., Question: What causes an image to reflect? (A) the sun (B) fibers (C) erosion (D) a wave (E) Light (F) heat (G) photons (H) forces
Output:
E