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 Input:
Fact1: heating salt water causes the water to evaporate while the salt remains, Fact2: Salt is produced by the evaporation of sea water., Question: how is salt produced? (A) flow of electrons (B) solid, liquid, gas (C) chemical messengers (D) Solutions (E) Physical weathering (F) It gets heated up (G) near the shoreline (H) heating water

Ex Output:
H

Ex Input:
Fact1: Roundworms may be free-living or parasitic., Fact2: Roundworms make up the roundworm phylum, Nematoda., Question: What can the phylum Nematoda be? (A) dangerous (B) parasitic (C) horses (D) meiosis (E) more abundant (F) graptolites (G) homogenous (H) phytoplankton

Ex Output:
B

Ex Input:
Fact1: waxy leaves are used for storing water by some plants, Fact2: Kalanchoes are known for their waxy, thick, dark green leaves., Question: What uses leaves to store water? (A) animals (B) horses (C) heterotrophs (D) kalenchoes (E) eukyarotes (F) camels (G) it needs them (H) fans

Ex Output:
D