According to the passage, which of the following is a tree statement about sectional confl

According to the passage, which of the following is a tree statement about sectional conflicts in America between 1763 and 1789？

A．These conflicts were instigated by eastern interests against western settlers.

B．These conflicts were the most serious kind of confliet in America.

C．These conflicts eventually led to openly expressed class antagonism.

D．These conflicts contained an element of class hostility.