Q: 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: exercise has a positive impact on a human 's health, Fact2: Prevention is key to their health, longevity, and reproduction., Question: Human longevity and reproduction are positively impacted by: (A) aging (B) food (C) nutrients (D) gene flow (E) old age (F) exercise (G) dying young (H) reduced heat
A:
F