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