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 Q]: Fact1: Growth is faster during infancy than it is during puberty., Fact2: Humans experience their fastest growth rate during fetal development and early infancy., Question: Which period beats puberty for speed of growth? (A) melanin amount (B) fetal development (C) menopause (D) budding (E) several genes (F) mild heating process (G) Seconds and minutes (H) It's inherited from genes
[EX A]: B

[EX Q]: Fact1: Butter is a fat that is a solid at room temperature., Fact2: Room temperatures between 40 and 80 Fahrenheit, or 5 and 27 Celsius, are best for storage., Question: When is butter a solid? (A) rapid changes occur (B) protect eyes in the lab (C) around 5 to 27 degrees Celsius (D) one effect of diabetes (E) protein foreign to the body. (F) natural atmosphere component (G) reduce acidity of food (H) speed at which sound moves
[EX A]: C

[EX Q]: Fact1: Vertebrates are all chordates that have a backbone., Fact2: Mammals are like other chordates in that they have backbones., Question: what are vertebrates? (A) jellyfish (B) bacteria (C) animals (D) Catch prey (E) humans (F) crocodiles (G) invertebrates (H) mammals
[EX A]:
H