Why did the author change his mind to accept the invitation to the White House
A.He was eager to read his poetry to an audience of other poets and literary critics.
B.He wanted his writing and the writing of other Native American men and women to take on a more political tone.
C.He remembered the sacrifices that his ancestors had made for the privilege of going there, even if only to be ignored.
D.He realized that he had not been invited to the event as a representative of Native Americans.