Which sentence uses commas correctly? *

A: I like to have pepperoni sausage mushrooms and olives, on my pizza.

B: I like to have, pepperoni, sausage, mushrooms and olives on my pizza.

C: I like to have pepperoni, sausage, mushrooms, and olives on my pizza.

D: I like to have pepperoni sausage, mushrooms, and olives on my pizza.