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: a flashlight requires a source of electricity to produce light, Fact2: Batteries are a very handy source of power., Question: What requires a battery to produce light? (A) peachleaf willow (B) a dog (C) electrically (D) a cat (E) a flashlight (F) energy (G) another battery (H) heat energy
Output:
E