In Act II of Julius Caesar, what does Cassius mean when he says, “Mark Antony, so well beloved of Caesar, should outlive Caesar. We shall find of him a shrewd contriver.”?

Even if they kill Caesar, Antony will be just as difficult to control.

After Caesar is killed, Antony should appoint the new ruler of Rome.

Antony is a good candidate to rule Rome after Caesar is gone.

Antony should be the leader of the plot to overthrow and kill Caesar.