You will be given a definition of a task first, then some input of the task.
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: Some touch receptors sense differences in temperature or pain., Fact2: If the skin is painful, seek medical attention., Question: What senses differences when you hurt your skin? (A) touch receptors (B) sensory neurons (C) eyes (D) Veins and arteries. (E) matter vibrating (F) light receptors (G) smell (H) an organism's body
Output:
A