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: when a hurricane moves over land , that hurricane will decrease in strength, Fact2: Hurricanes grow strength from warm waters., Question: What makes a hurricane weaker? (A) Stronger winds (B) rapid changes occur (C) Tornadoes (D) Differences in speed (E) amount of heat (F) Being over land (G) chemical messengers (H) Warm water

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
F