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.
-When dining in the Congo hands should be washed before and after eating.

A) When dining in the Congo hands should be
B) When dining in the Congo hand should be
C) When dining in the Congo, hands should be
D) When dining in the Congo; hands should be