The price of a cowboy 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) All three of these sellers will gain producer surplus from selling a hat.

C) The sum of producer surplus is $30.

D) Willie's producer surplus is $30.

E) The sum of producer surplus is $45.