Q: 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 light bulb requires electrical energy to produce light, Fact2: Light is a part of the electromagnetic spectrum., Question: A bulb requires electrical energy to produce part of what kind of spectrum? (A) an electron microscope (B) magnetic (C) autism spectrum (D) electromagnetic (E) rain or sun shine (F) direct energy (G) field (H) hydrogen and oxygen
A:
D