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: fluoride decreases tooth decay, Fact2: Tooth decay is a destruction of the tooth enamel., Question: What does fluoride do? (A) reduce acidity of food (B) stop mouth pain (C) Extensive bone growth (D) make tooth enamel grow (E) protect eyes in the lab (F) It's inherited from genes (G) gas spreads in the air (H) decrease the destruction of tooth enamel
A:
H