Definition: 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").
Input: Fact1: All cells share some of the same structures and basic functions., Fact2: Cells are the basic building blocks of life., Question: What do the basic bulding blocks of life share? (A) food and shelter (B) Same color (C) Same structures (D) an organism's body (E) Same shape (F) layers of fat (G) Veins and arteries. (H) Same temperature
Output:
C