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").

Example Input: Fact1: a seismograph is used for measuring the size of an earthquake, Fact2: Magnitude a measure of earthquake size., Question: Seismographs measure what aspect of earthquakes? (A) Major effects (B) magnitude (C) Otoacoustic (D) power (E) classified (F) specialized (G) lifespan (H) their speed
Example Output: B

Example Input: Fact1: pollutants have a negative impact on the environment, Fact2: Carbon dioxide is a pollutant., Question: What affects the environment negatively? (A) sunlight (B) normal weather patterns (C) carbon dioxide (D) cigarettes (E) positivity (F) Smoking (G) harmful substances (H) fossil fuels
Example Output: C

Example Input: Fact1: Fertilization occurs when sperm swim to an egg inside an archegonium., Fact2: Fertilization occurs when the egg and sperm fuse and join., Question: What happens in the archegonium? (A) eggs separate (B) Earth orbiting the Sun (C) sperm and egg fuse (D) competition (E) fallopian tubes join (F) permineralization (G) It expands (H) cloning
Example Output:
C