How Were the Democrats Becoming Divided During the Late Nineteenth

How were the Democrats becoming divided during the late nineteenth century?

A) Poor and middle-class whites resented party domination by wealthy elite groups.
B) They did not split up; the Democrats remained a solid party.
C) Many Democrats, angry over support of terrorism, began to turn to the Republicans.
D) Black Democrats pushed for more rights, angering some of the whites in the party.