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: melting means changing from a solid into a liquid by adding heat energy, Fact2: When a substance melts, it changes phase from a solid to a liquid by the application of heat., Question: What can be done to a solid by adding heat energy? (A) massive damage (B) phasing the bubbles (C) It expands (D) cooling the center (E) Evaporation (F) changing the phase (G) removing the air (H) Water expanding

Ex Output:
F


Ex Input:
Fact1: Butter is a fat that is a solid at room temperature., Fact2: Some fats are more likely to cause heart disease., Question: What can butter lead to? (A) Heart disease (B) air pollution (C) reproduction (D) destruction (E) religion (F) trees (G) heating (H) Tooth pain

Ex Output:
A


Ex Input:
Fact1: Plants use cellulose for their cell walls., Fact2: Basically, fiber is cellulose ., Question: Plants use what for their cell walls? (A) sugar (B) cations (C) sulfur (D) fiber (E) glucose (F) Carbon (G) Cane. (H) peat

Ex Output:

D