Instructions: 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: Any surface that has not been sterilized is likely to be covered with bacteria., Fact2: Bacteria eat and bacteria digest foods., Question: a surface that is not what is likely to be covered with something that eats and digests foods? (A) cartilage (B) plastic (C) dirty (D) sterilized (E) a hosta (F) covered in bacteria (G) Unsafe (H) tooth enamel
Output:
D