How does h. t. johnson use sarcasm in his poem "the black man's burden"? a. he says that the natives "tolerate" the imperialist armies' rifles, when those rifles are actually killing the natives. b. he scorns the concept of labeling people by their skin color by labeling people "red" and "brown." c. he ridicules britain's soft-hearted dealings with the natives, who have shown only hard-hearted aggression towards civilization. d. he says that the british have solved the "black man's" problems but have created their own "white man" problems.