The Basic Military Strategy the British Developed to Crush the Revolution

The basic military strategy the British developed to crush the Revolution in 1777 was to

A) seize the cities and impose a naval blockade on American trade.
B) conquer the Delaware Valley and then attack Virginia.
C) isolate New England by invading New York from several directions.
D) attack New England from Canada and the Carolinas from Georgia.
E) coordinate Indian attacks in the West with an invasion from Canada.