Im not sure which one it is because they all make sense.
Ill list them.
A. Et vous il ont déjà mangé
English: And you have already eaten
B. Et eux il ont déjà mangé
English: And they have already eaten
C. Et lui il ont déjà mangé
English: And he has already eaten
D. Et moi il ont déjà mangé
English: And I have already eaten
I hope this at least helps?
