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: a mutation in the sex cells of a parent can cause a new trait to appear in the parent 's offspring, Fact2: Sex cells, also called gametes, are the sperm in males and the ova in females., Question: A mutation in which type of cell can cause a new trait to appear in a parent 's offspring (A) pollen (B) RNA (C) Gamete (D) Nerve cell (E) DNA (F) Somatic cell (G) hormones (H) Brain cell
Output:
C