3. How should this sentence be changed?

About 3500 B.C. in the Middle East, the plows invention enabled farmer's to increase crop yields.

A. Add an apostrophe before the sin plows and delete the apostrophe in farmer's
B. Add an apostrophe after the sin plows and move the apostrophe after the sin farmer's
C. Delete the apostrophe in farmer's
D. No change needs to be made to this sentence​