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 stack coins, boxes, books, and flowers.<sep>group: stacking <sep>question: Which are the hardest to stack?<sep>A: coins<sep>B: boxes<sep>C: books<sep>D: flowers
The flowers are the hardest to stack.