【单选题】

{$mediaurl} How does the professor introduce his discussion of the historical context ofAmerican realism

A、By comparing the literature ofBritain and the United States in the late 1800s.

B、By asking the students to list important events of the late nineteenth century.

C、By describing the effect ofAmerican realism on modernAmerican literature.

D、By outlining the career of an author considered to be a representative figure of realism.