In 1778,the Focus of the War Shifted

In 1778,the focus of the war shifted:

A) from minor skirmishes of fewer than 100 men to major battles,each involving thousands of soldiers.
B) from fighting in the southern states to fighting in New York and New England.
C) to an emphasis on the Continental army's trying to capture British strongholds in the Ohio Valley.
D) to the South,where the British captured Savannah that year.
E) to emancipation,when General Washington declared that all slaves who fought for American independence should be free.