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: cross-pollination increases genetic diversity, Fact2: Evolution requires genetic diversity., Question: What does evolution require? (A) Time and energy (B) Plant reproduction (C) cross-pollination (D) Reproduction (E) gene flow (F) coded genes (G) circulatory systems (H) animals with backbones

Ex Output:
C


Ex Input:
Fact1: sandpaper is used to smooth wooden objects, Fact2: All objects, even wooden tables, are made up of molecules which vibrate to create their mass., Question: What can be used to smooth a table? (A) Wax paper (B) Sponge (C) lamphreys (D) Tissue (E) Sandpaper (F) scratching it (G) keratin (H) tiny hairs

Ex Output:
E


Ex Input:
Fact1: Macroevolution occurs over geologic time above the level of the species., Fact2: Species is a property of genus, genus is a property of family, etc., Question: What is considered to be part of macroevolution? (A) Man (B) genus (C) pollen (D) Birds (E) legumes (F) power (G) embryos (H) animals

Ex Output:

B