Which of these is a general theme in A Raisin in the Sun?

A. The destruction that comes out of fighting for civil rights with force
B. The effects that having too many choices in life can have on a person
C. The exploration of which dreams are realistic for people who are discriminated against. D. The joy that accompanies the rapid fulfillment of peoples dreams

C. The exploration of which dreams are realistic for people who are discriminated against.