Detailed Instructions: In this task, you are given a multiple-choice question and you have to pick the correct option. Answer with option indexes (i.e., "A", "B", "C", and "D").
Problem:A rainy day leaves a lot of moisture in the air and rainbows occur (A) when light is burned (B) when light proceeds through (C) when light is black (D) when light is dim
Solution:
B