Which option is correct?

A. The teacher said, “It would be great if people could take your rubbish with you and put it in the bin.”

B. The teacher told the crowd it would be great if you could pick up their rubbish and put it in the bin.

C. The teacher said, “It would be great if you could all take their rubbish with them and put it in the bin.”

D. The teacher told the crowd it would be great if they could take their rubbish with them and put it in the bin.