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: unequal heating of Earth 's surface by the Sun causes global wind patterns, Fact2: Unequal heating by the sun s rays causes differences in temperature., Question: Global wind patterns are caused by (A) plate shifts (B) fissures of hot, acidic water (C) earth rotating on axis (D) Differences in temperature (E) gravity (F) electromagnetic energy (G) scattered light (H) Greenhouse gases
D