Given the task definition and input, reply with output. 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: Reptiles are a class of tetrapod vertebrates that produce amniotic eggs., Fact2: Amniotes are the reptiles, birds, and mammals., Question: What kind of eggs do birds have? (A) animals (B) insects (C) amnotic (D) seeds (E) fertile (F) made (G) white (H) warm
C