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: when the seasons change from the summer to the fall , the amount of daylight will decrease, Fact2: Then the days become colder and the number of daylight hours decreases., Question: what do days become in fall? (A) rainy (B) ligt (C) cold (D) stormier (E) colder (F) hotter (G) longer (H) air cools
[EX A]: E

[EX Q]: Fact1: Urine is the liquid waste product of the body that is excreted by the urinary system., Fact2: Mammals excrete urea in the watery form of urine ., Question: What is a waste product of the body that is excreted by the urinary system? (A) potash (B) food (C) CO 2 (D) sugar (E) urea (F) liquid (G) H 2 O (H) sulfur
[EX A]: E

[EX Q]: Fact1: Most reptiles have good eyesight and a keen sense of smell., Fact2: Olfaction is the sense of smell and gustation is the sense of taste., Question: What is one attribute of most reptiles? (A) aerobic capacity (B) good olfaction (C) a cuticle (D) warm-blooded (E) graptolites (F) an organism's body (G) permineralization (H) stamina
[EX A]:
B