Humans Have Changed the Selective Landscape of Plasmodium, the Infectious

Humans have changed the selective landscape of Plasmodium, the infectious agent that causes malaria, by developing drugs that kill this parasite. Plasmodium is resistant to many of these drugs. Which of the following is a likely characteristic of this parasite that contribute to its ability to develop resistance?

A) It occurs in a region where medical treatments are not regularly monitored.
B) The parasite has a quick generation time, and high mutation rates.
C) The parasite populations are constantly evolving in anticipation of the next drug.
D) None of the answer options is correct; Plasmodium has not changed in response to human efforts to eradicate it.