From the information in the passage, what Inference can the reader make about the result of Dr. Martin Luther King Jr's "call to action"?

OA. The bus owners cut the cost of bus tickets in order to stay in business,
OB. A majority of bus riders sacrificed convenience for principle.
OC. The bus owners refused to obey state laws regarding ridership on buses,
D. A majority of bus riders were financially inconvenienced.