Definition: 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: Heterotrophs are living things that cannot make their own food., Fact2: Proteins are an essential nutrient for heterotrophs ., Question: What do things that cannot make their own food need as a nutrient? (A) Energy (B) metal (C) animals (D) mud (E) Energy. (F) protein (G) prototype (H) fungi
Output:
F