The Following Are Different Market Structures

The following are different market structures:
1. Monopoly
2. Perfect Competitions
3. Monopolistic Competition
4. Undifferentiated Oligopoly
5. Differentiated Oligopoly
-Refer to the above information to answer this question.What is the name of the market in which there are numerous sellers who sell an identical product?

A) 1.
B) 2.
C) 3.
D) 4.
E) 5.