What is the MAIN idea of the section "Montgomery Bus Boycott"?
A
City buses in Montgomery did not allow white and black people to sit together.
B
Martin Luther King Jr. and other black people in Montgomery did not ride the bus for over a year.
C
Rosa Parks was arrested because she would not let a white person take her seat on the bus.
D
King and other black people protested peacefully to end segregation on Montgomery city buses.