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 Q]: Fact1: Insects may live in large colonies and have complex social behaviors., Fact2: Ants are social insects living in colonies., Question: which of the following are known to have complex social behaviors? (A) dogs (B) Wasps (C) tigers (D) Birds (E) toads (F) Tasmanian devils (G) koalas (H) Ants
[EX A]: H

[EX Q]: Fact1: Female monotremes lack a uterus and vagina., Fact2: Monotremes are mammals that lay eggs., Question: What do some female mammals lack? (A) epidermal (B) vision (C) uterus (D) alleles (E) fur (F) a cuticle (G) eardrum (H) alveoli
[EX A]: C

[EX Q]: Fact1: a rainbow is formed by refraction of light by separating light into all different colors, Fact2: Light rays come in through the lens., Question: A rainbow is formed by what of rays? (A) an electron microscope (B) energy of moving objects (C) heat energy (D) Solar energy (E) rain or sun shine (F) separation of colors (G) sun's heat (H) flow of electrons
[EX A]:
F