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").

Input: Consider Input: Fact1: Echinoderms lack a centralized nervous system., Fact2: Sand dollars and sea biscuits are also echinoderms., Question: What lacks a centralized nervous system? (A) Damaged hearing (B) Humans (C) Horses (D) Sand dollars (E) insects (F) Chickens (G) Pesticides (H) barnacles

Output: D


Input: Consider Input: Fact1: a mutation in the sex cells of a parent can cause a new trait to appear in the parent 's offspring, Fact2: Animals that reproduce sexually produce sex cells, or gametes., Question: a mutation in the _ of a parent can cause a new trait to appear in the parent 's offspring (A) eggs (B) courtship (C) mitochondria (D) alleles (E) pollen (F) gametes (G) ATP (H) hormones

Output: F


Input: Consider Input: Fact1: Macroevolution is evolution over geologic time above the level of the species., Fact2: Macroevolution is said to be the change from one species to another., Question: What occurs over geologic time above the level of the species. (A) Warm air moving into cold air (B) wind and erosion (C) remains of prehistoric life (D) tectonic plates being pushed together (E) Something with a head, thorax, and abdomen (F) The area was once underwater (G) Species changing to another. (H) movement of tectonic plates


Output: G