Deep Clean is aware of all the MWTP data and group size data in the table above, but cannot condition its prices directly on a customer's type, i.e., it has to offer the full menu to all customers. What menu should Deep Clean offer to maximize its revenue? As usual, assume that any customer who is indifferent between more than one option chooses the option that the seller prefers and that each customer can purchase only one option. Which of the following is the optimal menu of prices? (If a service is not listed in the menu, then it is not offered.)

A. Price for " Basic" : $20 Price for " Intense" : $45 Price for " Extreme" : $65

B. Price for " Basic" : $40 Price for " Extreme" : $85

C. Price for " Basic" : $40 Price for " Intense" : $60 Price for " Extreme" : $85

D. Price for " Basic" : $20 Price for " Extreme" : $85 E. None of other choices is the optimal menu of prices