Black Power Emerged as a Response to Which of the Following

Black Power emerged as a response to which of the following factors?

A) frustrations over the federal government's coddling of civil rights workers
B) the Republican Party's attempts to determine the civil rights movement's strategy
C) the civil rights movement's failure to have any impact on the economic problems of black ghettos
D) white Americans' tendency to specify their European ethnicity
E) the passage of the Civil Rights Act