Which of the Following Statements Is TRUE

Multiple Choice

Which of the following statements is TRUE?
I. People with common diseases live longer than people with rarer diseases.
II. Developing drugs for common diseases is a lot less expensive than developing drugs for rare diseases.
III. It is more profitable to make drugs for common diseases because the market is bigger than it is for rare diseases.

A) I and II only
B) I and III only
C) II only
D) III only