You will be given a definition of a task first, then some input of the task.
The task is about reading the given context, group and MCQs and then generating answers from the given input. MCQs are multiple choice questions in which a question is asked and few options are given, among which one or in some cases more than one can be the answer.

context: A person is sliding four bricks across four hard surfaces. The first surface is covered with carpet, the second surface is covered with frost, the third surface is covered with gravel, and the fourth surface is covered with concrete.<sep>group: sliding <sep>question: Which brick slides the longest distance?<sep>A: carpet<sep>B: frost<sep>C: gravel<sep>D: concrete
Output:
The surface covered with frost is the easiest for the brick to slide across.