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: Insects have exoskeletons., Question: What is attached to insects' thorax? (A) sugar (B) Energy. (C) antennae (D) Energy (E) wings (F) nothing (G) food (H) pancreas
[A]: E


[Q]: Fact1: Mutualism is a symbiotic relationship in which both species benefit., Fact2: Dogs and humans are symbiotic species., Question: what exists between dogs and humans? (A) mutualism (B) gravity (C) communication (D) antigens (E) several genes (F) space between (G) electrons (H) german shepherd
[A]: A


[Q]: Fact1: erosion causes deposition, Fact2: Deposition landforms also occur forming stalactites and stalagmites ., Question: What contributes to forming stalactites and stalagmites? (A) Shadows (B) rainfall (C) Bats (D) Columns (E) heat (F) flooding (G) Erosion (H) calcite
[A]:
G