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: soil is formed by rocks eroding, Fact2: Rivers erode the rocks they flow over., Question: What is formed by rivers? (A) fish (B) soil (C) rain (D) bamboo (E) spring (F) clouds (G) kayaks (H) NaCl

Ex Output:
B


Ex Input:
Fact1: when the seasons change from the summer to the fall , the amount of daylight will decrease, Fact2: Then the days become colder and the number of daylight hours decreases., Question: what do days become in fall? (A) rainy (B) ligt (C) cold (D) stormier (E) colder (F) hotter (G) longer (H) air cools

Ex Output:
E


Ex Input:
Fact1: a circle graph can be used to display percents, Fact2: Fractions are sometimes expressed as a percent ., Question: A circle graph can be used to display (A) antigens (B) Cladistics (C) Fractions (D) several genes (E) formulas (F) fragments (G) Chemicals (H) light

Ex Output:

C