Which sentence needs a possessive apostrophe?

A. When the cats away, the mice will play.
B. Back in 68, we though the world was our oyster.
C. Parson Brown said we’re all our brothers keepers.
D. Be sure to mind your Ps and Qs.

2 answers

C. Parson Brown said we’re all our brothers keepers.
Where does the apostrophe go in C?