The Price of a Hat Is $100

Multiple Choice

The price of a hat is $100. Willie can produce a hat at a marginal cost of $130, Waylon can produce at a marginal cost of $100, and Merle can produce at a marginal cost of $85. Which of the following statements is correct?

A) The sum of producer surplus is $15.
B) The sum of producer surplus is $30.
C) All three of these sellers will gain producer surplus from selling a hat.
D) Willie's producer surplus is $30.
E) The sum of producer surplus is $45.