Name Brand Drugs Are Able to Continue Capitalizing on Their

Name brand drugs are able to continue capitalizing on their market power even after generic drugs enter the market because i) almost all people fear the generic drug companies are devoting too few resources to research and development.
Ii) some people fear that generic drugs are inferior.
Iii) some people are loyal to the name brand.

A) i) and ii) only
B) ii) and iii) only
C) i) and iii) only
D) i) , ii) , and iii)