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").

[Q]: 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
[A]: E


[Q]: Fact1: energy is used for heating a building by a heating system, Fact2: Faculty offices are also in the building., Question: What contains energy to raise the temperture of an office? (A) chemical messengers (B) peachleaf willow (C) deoxyribonucleic acid (D) cooling system (E) swimming pool (F) heating system (G) gym (H) organic molecules
[A]: F


[Q]: Fact1: competition may cause animals to fight towards members of their own species, Fact2: Competition Animals compete for food and shelter., Question: What may cause animals to fight towards members of their own species? (A) Males and females (B) food and shelter (C) energy of moving objects (D) fashion (E) jealousy (F) vanity (G) parasites (H) threatened
[A]:
B