Suppose that the demand curve for seats at the Frederick Keys minor league baseball stadium is given as Q^d = 6,000 - 200p. How many fans would attend a game if tickets were free and there was no limit on the number of fans permitted in the stadium? What is the lowest ticket price at which no fans would attend the game? If the stadium capacity is fixed at 4,000, what price would maximize revenue while ensuring a sellout? Assume the Frederick Keys are not a monopoly. Explain your answer and be sure to include a graph in answering the questions.