In the Context of the American Revolution, Which of the Following

In the context of the American Revolution, which of the following is a true statement about George Washington?

A) He issued a proclamation offering freedom to any slave who agreed to fight for the British.
B) He refused to use black soldiers during the first years of the war.
C) He rejected the Olive Branch Petition of the Second Continental Congress and in August 1775 denounced the colonists as rebels.
D) He wrote a short book called Cato's Letters .
E) He proposed, on June 7, 1776, that the colonies officially declare their independence.