Washington's Defeat of Cornwallis at Yorktown

Washington's defeat of Cornwallis at Yorktown:

A) allowed Washington to march his men unmolested through the Lower South where he achieved ultimate victory at Camden.
B) would have been impossible without Benedict Arnold's poor generalship on behalf of the British.
C) angered the French, whose fleet had yet to arrive and who wanted credit for the victory.
D) destroyed British public support for the war.
E) made up for Washington's failure to support General Nathanael Greene at the Battle of Guilford Courthouse.