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: pasteurization reduces the amount of bacteria in milk, Fact2: Heat, including pasteurization, reduces vitamin content., Question: Heating milk to reduce the amount of bacteria also reduces what? (A) thermal expansion (B) air pollution (C) snow, ice, and rock (D) melanin amount (E) vitamin content (F) negative feedback (G) allergen (H) antigens
E