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 use pheromones to communicate with each other., Fact2: All echinoderms are deuterostomes ., Question: What use pheromones to communicate with each other? (A) passenger pigeons (B) honeybees (C) deuterostomes (D) Most plants (E) insects (F) animals (G) huddle together (H) orchids

Output: C


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: clouds are formed by water vapor rising into colder regions of the atmosphere and condensing, Fact2: Cloud cover and precipitation  cause temperature fluctuations., Question: What can cause temperature fluctuations. (A) mountain formations (B) remove toxic material from the stomach before it is absorbed (C) ocean tides (D) trees growing (E) Something that can be converted to kinetic and heat energy by a motor (F) keeping food fresh for long periods of time (G) water vapor rising into colder regions of the atmosphere and condensing (H) skin redness and pain, possible swelling, blisters, fever, headaches


Output: G