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").

[EX Q]: Fact1: Butter is a fat that is a solid at room temperature., Fact2: Some fats are more likely to cause heart disease., Question: What can butter lead to? (A) Heart disease (B) air pollution (C) reproduction (D) destruction (E) religion (F) trees (G) heating (H) Tooth pain
[EX A]: A

[EX Q]: Fact1: Earth 's tilt on its rotating axis causes seasons to change, Fact2: Weather changes from season to season., Question:  Earth 's tilt on its rotating axis causes changes in what (A) weather (B) sunlight (C) Joules (D) wind (E) heat (F) climate (G) energy (H) earth
[EX A]: A

[EX Q]: Fact1: hearing is used for sensing sound by animals, Fact2: Hearing requires functioning ears., Question: What are used for sensing sounds by animals? (A) ears (B) echolocation (C) birds (D) fibers (E) toads (F) the nose (G) Frogs. (H) the blood
[EX A]:
A