Suppose tickets for a regular seat at Super Bowl XXXVII cost just $500 when bought at face value (the cost at the box office). Scalpers (people who buy tickets at face value and sell them at higher prices), however, sell tickets for $2,000 or more. The opportunity cost of attending the Super Bowl with a regular ticket is:a.2,500.b. None of the other choices is correct.c. $2,000.d. $1,500e. The monetary price paid to obtain the ticket.