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: carpooling decreases the amount of cars used to travel to a place, Fact2: Carpooling cuts down on congestion and pollution., Question: What decreases when we decrease the amount of cars traveling to one place? (A) Temperature (B) Heart rate (C) Climate change (D) Pollution (E) Clean air (F) forces (G) Burning fossil fuels (H) gene flow

Ex Output:
D

Ex Input:
Fact1: Migrants typically travel long distances., Fact2: Migrant birds arrive., Question: What travels long distances? (A) humans (B) jets (C) rocks (D) birds (E) camels (F) cocoons (G) Light (H) eggs

Ex Output:
D

Ex Input:
Fact1: Pollen consists of tiny grains that are the male gametes of plants., Fact2: Male gametes are sperm., Question: pollen consists of tiny grains of what part of plants? (A) flowers (B) swea (C) seeds (D) white (E) sperm (F) embryos (G) cacti (H) CO 2

Ex Output:
E