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: the Earth being tilted on its rotating axis causes seasons, Fact2: Summer is a bold season., Question: What does the Earth being tilted on its rotating axis cause? (A) wind (B) the galaxy (C) summer (D) spring (E) rainfall (F) heat (G) the moon (H) the solar system
A:
C