For a "Superstar" to Emerge,what Must Be the Case

For a "superstar" to emerge,what must be the case

A) It is possible to supply the good or service that the superstar produces at low cost to every customer.
B) Some customers are willing and able to pay large sums of money to enjoy the good or service provided by the superstar.
C) The superstar has a natural monopoly on his or her good or service.
D) The superstar is willing to settle for a level of pay that is less than his or her value of marginal product.