Teacher: Creating a multiple-choice question from the given context and a 'group' which indicate the focus of the question. The question must come first, separated by <sep> from the candidate answers. The answer to the question does not have to exist in the context.
Teacher: Now, understand the problem? If you are still confused, see the following example:
context: A person is trying to roll an apple, a ball, a block, and a bottle. <sep>group: rolling
Solution: question: Which is the hardest to roll? <sep>A: apple 	B: ball 	C: block 	D: bottle
Reason: The MCQ question is asked regarding rolling of the objects and options of the question are present in the context.

Now, solve this instance: context: A person is trying to bounce a rubber ball. They drop a first ball onto steel, a second ball onto rubber, a third ball onto asphalt, and a fourth ball onto foam.<sep>group: bouncing
Student:
question: Which ball bounces the least?<sep>A: steel<sep>B: rubber<sep>C: asphalt<sep>D: foam