Choose the Answer Which Best Rewords the Italicized Portion

Choose the answer which best rewords the italicized portion. If you think the original wording is best, choose option A.
Some Egyptians work in agriculture, producing corn, fruit, rice, cotton and barley near the Nile Valley and Nile River Delta.

A) producing corn, fruit, rice, cotton and barley
B) producing corn;fruit; rice; cotton; and barley
C) producing: corn, fruit, rice, cotton and barley
D) producing corn, fruit, rice, cotton, and barley