Joss Is a Marketing Consultant

Multiple Choice

Joss is a marketing consultant.Iris and Daphne are potential customers interested in commissioning Joss to undertake a market survey and compile the findings in a report.Iris is willing to pay $500 for the service while Daphne is willing to pay $800.Suppose that the opportunity cost of Joss's time is $1200.Assume that Iris and Daphne do not know each other.Which of the following statements is true?

A) Joss should charge each customer $600; that way he will earn his opportunity cost and it will be fair to both Iris and Daphne.
B) Joss should charge Iris $500 and Daphne no more than $700; that way he earns his opportunity cost and there is no loss in economic surplus.
C) Joss should charge Iris $500 and Daphne $800; that way economic surplus is maximised.
D) Joss should charge Iris $500, but charging Daphne $800 is unfair because it allows Joss to earn more than his opportunity cost.