Instructions: 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: transportation technology is used for moving people, Fact2: Busses and trains are excellent modes of transportation., Question: What are used for moving people? (A) Limbs (B) trains (C) bicycle (D) dogs (E) cats (F) bike (G) robots (H) engines
Output:
B