The Client Asks the Nurse Why There Aren't Better Drugs

The client asks the nurse why there aren't better drugs for HIV infection when so much money is spent on research. What is the best response by the nurse?

A) "Developing new drugs is difficult because we still do not understand the virus."
B) "Developing new drugs is difficult because we still do not have enough money."
C) "Developing new drugs is difficult because the virus mutates so readily."
D) "Pharmaceutical corporations are not interested in further development."