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: Consider Input: Fact1: Some parasites live on the surface of their host., Fact2: Leeches are external parasites., Question: What unwanted creature would be found on the surface of a human body using it as a host?  (A) Tapeworm. (B) Leeches. (C) Pesticides (D) animals (E) insects (F) Hookworm (G) bacteria (H) Bracelet.

Output: B


Input: Consider Input: Fact1: matter vibrating can cause sound, Fact2: Thus, sound is a wave in air ., Question: what can matter vibrating cause? (A) Pollution (B) energy (C) Relieve pain (D) kinetic energy (E) wave in air (F) Energy. (G) murmur (H) Greenhouse gases

Output: E


Input: Consider Input: Fact1: the Earth revolving around the Sun causes the seasons to change on its axis, Fact2: Seasons are caused because the earth's axis is tilted as the earth revolves around the sun., Question: what causes seasons? (A) moon (B) decreased differentiation (C) earth's revolving (D) the ocean (E) Physical weathering (F) colors of the spectrum (G) gravity (H) dry conditions


Output: C