Lou Has a Medical Condition That Interferes with Restful Sleep

Multiple Choice

Lou has a medical condition that interferes with restful sleep. Though he has been to the doctor frequently about the issue, no treatments or medications are available that would be helpful to him. Here, no marketing occurs because

A) the doctor does not have unsatisfied needs.
B) the doctor cannot offer a viable product for exchange.
C) marketing is illegal in the pharmaceutical industry.
D) the doctor and patient are unable to communicate.
E) Lou is unable to afford his medications.