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: a plants require water for survival, Fact2: Water contains hydrogen and oxygen., Question: What do plants require for their survival? (A) Light (B) Proteins (C) Energy. (D) salinity (E) hydrogen (F) nutrients (G) sunlight (H) food

Ex Output:
E


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: tidal energy can be used to produce electricity, Fact2: Ocean thermal is energy derived from waves and also from tidal waves., Question: What can be used to produce electricity? (A) light bulbs (B) waves (C) wind (D) headphones (E) rivers (F) coal (G) motors (H) viruses

Ex Output:

B