Why might Obama have included the story of Ashley and the elderly black man?

A. to encourage listeners to follow the example set by Ashley and the man of working together to stop racial discrimination in society

B. to give listeners context so that they might understand how his campaign in South Carolina started

C. to give an example of the racial tensions and divisions still present today in communities of South Carolina

D. to emphasize the urgency with which listeners need to act in order to end racial discrimination​