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: Earth 's tilt on its rotating axis causes seasons to change, Fact2: Winter followed by summer are the slower seasons., Question: what changes from earth's tilt on its rotating axis? (A) h2o (B) temperature (C) rays or beams (D) winter and summer (E) density (F) dry conditions (G) gravity (H) population movement
A:
D