Hmm, I would probably go with B. While both I think are correct, B makes a little more sense.
Martin Luther King Jr. organized a citywide bus boycott in support of Rosa Parks for refusing to obey segregation laws on public buses. The boycott lasted over a year and King became the new leader in the push for desegregation in all parts of society.
A drawback occurred in the melody because of a miscommunication in the counterpoint. I think that's ok ?