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: bacteria cause food to spoil, Fact2: Food spoils quickly at high temperature., Question: bacteria are more active at what (A) their hosts (B) high temperatures (C) dormant state (D) dry and hot (E) they body they live in (F) energy barrier (G) aerobic capacity (H) Animal survival
B