The 'Tiger Golf Club' is the only golf course in a country town. Each customer to the golf course incurs a MC of $1.The demand for the golf course by each individual customer can be expressed as P = 10 - q, where q = number of visits to the golf course and P = price per round of golf. The pricing scheme that earns the highest profits for the golf club is to:

1. Set a price per round of golf of $10.
2. Set a price round of golf of zero, and an entry fee of $50.
3. Set a price round of golf of $1, and an entry fee of $81.
4. Set a price round of golf of $1, and an entry fee of $40.50.