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: Plants are the major producers in terrestrial biomes., Fact2: Grasses are very distinctive plants., Question: What is a producer in terrestrial biomes? (A) food (B) Oak (C) mammals (D) flowers (E) earth (F) grass (G) Trees (H) mushrooms

Output: F


Input: Consider Input: Fact1: Female monotremes lack a uterus and vagina., Fact2: Monotremes are mammals that lay eggs., Question: What do some female mammals lack? (A) epidermal (B) vision (C) uterus (D) alleles (E) fur (F) a cuticle (G) eardrum (H) alveoli

Output: C


Input: Consider Input: Fact1: damming a river can cause a lake to form, Fact2: Beavers build dams., Question: What animal can help lakes to form? (A) mussels (B) the trout (C) sea urchins (D) eukyarotes (E) the duck (F) The beaver (G) amphibians (H) the otter


Output: F