Stephanie was the last person to hand in the essay on the advantages and disadvantages of social networks.

A. The last thing Stephanie handed in was her essay on the advantages and disadvantages of social networks.

B. Everyone had submitted the essay on the advantages and disadvantages of social networks before Stephanie did.

C. Among the last people who submitted the essay on the advantages and disadvantages of social networks was Stephanie.

D. Everyone had heard about the essay on the advantages and disadvantages of social networks before Stephanie did.