All of the statements below are historically accurate. Mark the item if the event it describes helped lead to war between Britain and the American colonists.

A.
Britain enacted the Stamp Act to put a tax on most printed material.

B.
British and American troops fought at Yorktown.

C.
British soldiers killed five colonists in what came to be called the Boston Massacre.

I am 90% Sure of A+C, but would B count because if it lead up to the fighting then B wouldn't count cause they're already fighting at that point.

Question

All of the statements below are historically accurate. Mark the item if the event it describes helped lead to war between Britain and the American colonists.
 
 A.
Britain enacted the Stamp Act to put a tax on most printed material.
 
 B.
British and American troops fought at Yorktown.
 
 C.
British soldiers killed five colonists in what came to be called the Boston Massacre.

I am 90% Sure of A+C, but would B count because if it lead up to the fighting then B wouldn't count cause they're already fighting at that point.