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: lakes are formed by precipitation and runoff, Fact2: Runoff from precipitation is a natural part of the water cycle., Question: What are some of the steps that forms a lake? (A) decomposition and respiration (B) storing water (C) photosynthesis and solar energy (D) near the shoreline (E) precipitation and run-off (F) perspiration and excretion (G) The area was once underwater (H) At the peak of a mountain

Output: E


Input: Consider Input: Fact1: Skin color is another polygenic trait., Fact2: Tourette syndrome a polygenic disorder ., Question: what is tourette syndrome? (A) malaria (B) cancer (C) trait (D) fever (E) cell (F) antigen (G) virus (H) Type O

Output: C


Input: Consider Input: Fact1: Viruses contain DNA but not much else., Fact2: Where most viruses are DNA, HIV is an RNA virus., Question: What does HIV contain? (A) p53 (B) RNA (C) DNA (D) CFCs (E) ova (F) gene (G) HPV (H) mold


Output: B