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: measuring the hardness of minerals requires scratching those materials, Fact2: To figure out the hardness of a mineral, the Moh's scale of hardness is used., Question: the Moh's scale of hardness is used by doing what to the materials (A) heating (B) tool extensions (C) protection (D) classified (E) scratching (F) as a base (G) how they move (H) Cladistics

Ex Output:
E

Ex Input:
Fact1: electricity is used as an energy source by electrical devices, Fact2: Electrical fields result from electrical devices and televisions., Question: What is used as an energy source by television? (A) electricity (B) light (C) our nearest star (D) air (E) energy (F) satellites (G) photons (H) rocks

Ex Output:
A

Ex Input:
Fact1: Amphibians have permeable skin that easily absorbs substances from the environment., Fact2: Natural Toxins Toxins are poisonous substances from bacterias, plants or animals., Question: Why can amphibians easily absorb toxins? (A) salamanders (B) permeable skin (C) hydrate their cells (D) it needs them (E) poisonous frogs (F) Pesticides (G) cold blooded (H) bending light rays

Ex Output:
B