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 Input:
Fact1: glass cause refraction of light, Fact2: Refraction Refraction is the bending of light rays., Question: Glass causes the _ of light (A) intensification (B) bending (C) photons (D) a wave (E) Pollution (F) blocking (G) heat (H) amplification

Ex Output:
B


Ex Input:
Fact1: Butter is a fat that is a solid at room temperature., Fact2: Room temperatures between 40 and 80 Fahrenheit, or 5 and 27 Celsius, are best for storage., Question: When is butter a solid? (A) rapid changes occur (B) protect eyes in the lab (C) around 5 to 27 degrees Celsius (D) one effect of diabetes (E) protein foreign to the body. (F) natural atmosphere component (G) reduce acidity of food (H) speed at which sound moves

Ex Output:
C


Ex Input:
Fact1: weathering means breaking down rocks from larger whole into smaller pieces by weather, Fact2: Igneous rocks are made from lava that hardens., Question: Weathering means breaking down what from larger whole into smaller pieces by weather? (A) objects that have mass (B) Something made from lava (C) Something made from water (D) movement of tectonic plates (E) Something formed from skeleton (F) A solid geometric shape (G) Something made from wind (H) Something made from metal

Ex Output:

B