"Saratoga Changed Everything,"says Your Text, Referring to Which of the Following

"Saratoga changed everything,"says your text, referring to which of the following?

A) Britain's success meant they retained control of the seas after all.
B) Britain's defeat led to a treaty of alliance with France, opening a new phase of the war.
C) Britain's defeat meant they abandoned all hope of subduing the rebellion and opened negotiations for peace and American independence.
D) The military standoff forced General Howe to turn toward Philadelphia instead of linking up with General Burgoyne.