Which of the Following British Policies or Efforts During the American

Which of the following British policies or efforts during the American Revolution backfired, and how?

A) The British offered enslaved blacks freedom in return for fighting for their cause, but most of these enslaved blacks escaped before they reached the battlefield.
B) The British recruitment of enslaved blacks to join the military and their allowing them to use arms led to many southerners joining the Patriot forces.
C) The British rallied the support of Loyalist colonists during the war by causing them to fear the Patriots, but the Patriots rarely treated the Loyalists with violence.
D) More than 50 percent of the American colonists were Loyalists because the British promised them the ability to return to England, but most Loyalists adopted the Patriots' cause and remained in America at the end of the war.
E) The British visited the French inhabitants in Canada in hope of convincing them to aid the war effort, but this visit resulted in many of their soldiers dying from a smallpox outbreak.