Which detail from the article would be MOST important to include in a summary of the article?

A
He graduated first in his class in 1951 and was elected student body president.

B
In early 1957, the city of Montgomery gave in and ended segregation on public buses.

C
From his jail cell, King explained that nonviolent protest is meant to cause a crisis.

D
In 1969, his killer, James Earl Ray, was sentenced to 99 years in prison.

C

From his jail cell, King explained that nonviolent protest is meant to cause a crisis.