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: being exposed to wind can cause erosion of soil, Fact2: Soil Erosion Soil erosion is caused by disturbance of a land surface., Question: what can being exposed to wind cause? (A) a lot of human deaths (B) death and devastation (C) increase in carbon (D) forest is destroyed (E) a tree falling (F) disturbance of land surface (G) loss of sunlight (H) low tides
[EX A]: F

[EX Q]: Fact1: when light enters the eye through the pupil , that light falls on the retina, Fact2: Images are retained on the retina of a viewer's eye for a fraction of a second after they strike it., Question: Where are images retained? (A) Retina (B) RNA (C) calcite (D) an object (E) arteries (F) energy (G) squids (H) segmented
[EX A]: A

[EX Q]: Fact1: thick fur can be used for keeping warm, Fact2: Most mammals have hair, or fur, covering their body., Question: Most mammals have a body what for keeping warm? (A) four limbs (B) exoskeleton (C) warm (D) scales (E) sweating (F) covering (G) bareness (H) opening
[EX A]:
F