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.

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

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

context: A person is trying to bounce a rubber ball. They drop a first ball onto grass, a second ball onto concrete, a third ball onto asphalt, and a fourth ball onto rubber.<sep>group: bouncing

question: Which ball bounces the least?<sep>A: grass<sep>B: concrete<sep>C: asphalt<sep>D: rubber