Dr Jones Is Developing a Drug to Treat Cancer

Dr. Jones is developing a drug to treat cancer. He observes that one of the side effects of this drug is that it elevates a person's mood. A year later, this drug becomes an important tool in the treatment of depression. Discoveries of this type in science are

A) very common because serendipitous discoveries never occur in science.
B) uncommon because in reality the ideal method for developing medications is first to understand the pathological process by which a disorder develops, then to identify an agent that will change in the process.
C) common because physicians carefully monitoring a patient's reaction to a drug have observed unanticipated benefits in other areas.
D) very common as most physicians routinely do this sort of research with their patients.
E) very uncommon because science has clearly established biochemical mechanisms that account for most psychological disorders.