Suppoe the monthly demand for golf ervice at a golf club i given by the invere demand function, P = 20 – Q. The marginal cot to the golf club for each round i €2. There are 10 cutomer with exactly the ame invere demand function. The fixed cot of running the club are €500 a month. At the moment the golf club charge each peron €11 per round and each peron play 9 round of golf a week. The entry fee that the club hould charge each player under an optimal two-part tariff i A. 4 B. 2 C. 162 D. 324