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").

[EX Q]: Fact1: an incandescent light bulb converts electricity into light by sending electricity through a filament, Fact2: Electrical energy is also energy., Question: What part of a light bulb has energy run through it, converting energy into light? (A) adding heat (B) sun's heat (C) cotton (D) heat energy (E) glass (F) light (G) filaments (H) broken light bulbs
[EX A]: G

[EX Q]: Fact1: All animals are heterotrophs., Fact2: Heterotrophic bacteria derive energy from the breakdown of organic molecules., Question: What derive energy from the breakdown of organic molecules? (A) Most plants (B) hydrocarbons (C) potatoes (D) all stones (E) all water sources (F) all mountains (G) all animals (H) Generating heat
[EX A]: G

[EX Q]: Fact1: Testosterone stimulates the reproductive organs to develop into male organs., Fact2: Male mammals have a tube-like organ called the 'penis'., Question: What causes the penis to develop? (A) Creatine (B) Energy (C) Estrogen (D) Testicles (E) matter vibrating (F) Testosterone (G) movement (H) It expands
[EX A]:
F