Which of the Following Made It Difficult for the British

Which of the following made it difficult for the British Army to destroy Washington's army?

A) Washington's army had better training than the British army.
B) Washington had the most powerful army in the world, supremacy of the seas, and an organized chain of command.
C) Washington's army was adept at running up hills and into forests to avoid being captured.
D) The British army was not well armed or accustomed to large battles on vast battlefields.
E) Washington's army hired German mercenaries, the Hessians, to fight the British Army.