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 stack lamps, books, blocks, and plates.<sep>group: stacking <sep>question: Which are the hardest to stack?<sep>A: lamps<sep>B: books<sep>C: blocks<sep>D: plates
A: 
The lamps are the hardest to stack.