Copyright @ Super scholars. All rights reserved. Question 9 There are four potential suppliers of haircuts. John , Sidney , Susan and Dan are each willing to provide one haircut. Their respective opportunity costs are : $4, $8, $12, and $16. There are four potential consumers of haircuts. Cheng , Wendy , Trevor and Chris are each willing to purchase one hair cut. Their respective willingness to pay are : $20, $16, $12, and $8. In a competitive equilibrium , the total surplus will be A. $12 B. $16 C. $24 D. $8 E. Zero