What events during the reconstruction likely sparked the formation of the ku klux klan?

The 3 main events that sparked the formation of the ku klux klan during reconstruction are: 

1. The economic growth of the Northerners and their disapproval of slavery only fueled the fire of the Southerners outrage.

2. When the fifteenth Amendment guaranteed all American men the right to vote. 

3. Republican takeover of local politics and occupation by federal troops.

Ibelieve the answer is c