Given the task definition and input, reply with output. 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: a generator converts kinetic energy into electrical energy, Fact2: Electric energy is stored in batteries., Question: Energy from a generator (A) is weaker than nuclear energy (B) reducing acid rain (C) heat is produced (D) cannot be used in circuits (E) can be stored in batteries (F) mechanical waves (G) has a high voltage (H) igniting fuel and oxidiser
E