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: high pressure systems cause clear weather, Fact2: During windy weather, the pollution is dispersed and cleared away., Question: What cause pollution to disperse? (A) low pressure systems (B) fissures of hot, acidic water (C) zero pressure systems (D) fossil fuels (E) harmful substances (F) no pressure systems (G) high pressure systems (H) Greenhouse gases
G