You will be given a definition of a task first, then some input of the task.
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").

Fact1: when the season changes , the amount of daylight will change, Fact2: Causes seasons by changing angle of sun., Question: What will change the amount of daylight? (A) The amount of hours in a day (B) Changing the angle of the sun (C) refraction of light (D) Changing the temperature (E) the ground shaking (F) exposure to cold (G) Closing the blinds (H) a hemisphere is tilted away from the sun
Output:
B