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: Wings are part of the exoskeleton and attached to the thorax., Fact2: Insect wings are attached to the dorsal side of their thorax., Question: What side of an insect are wings attached to? (A) white (B) dorsal (C) protected (D) abdomen (E) elytra (F) three (G) strong (H) tail
[A]: B


[Q]: Fact1: a plants require water for survival, Fact2: Water contains hydrogen and oxygen., Question: What do plants require for their survival? (A) Light (B) Proteins (C) Energy. (D) salinity (E) hydrogen (F) nutrients (G) sunlight (H) food
[A]: E


[Q]: Fact1: Mammals can also generate little bursts of heat by shivering., Fact2: Heat production is increased by shivering and non-shivering thermogenesis ., Question: what do mammals use for heat? (A) thermogenesis (B) Animal fur (C) feet (D) Chemical energy (E) fur and fat (F) layers of fat (G) convection (H) ice
[A]:
A