Which sentence uses commas correctly?

A.
The explorers should arrive in Gibraltar by Aug. 22 2014, and return to Florida by Aug. 8 2015.

B.
Was London England, the site of the last Summer Olympics?

C.
Please mail this package to 3402 Jennings Drive, Arlington, Texas, by Wednesday, December 19.

D.
Congress voted on December 15, 1791 to ratify the Bill of Rights.