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 trying to roll a block, a book, a ball, and a mirror.<sep>group: rolling <sep>question: Which is the easiest to roll?<sep>A: block<sep>B: book<sep>C: ball<sep>D: mirror
Output:
The ball is the easiest to roll.