Answer:
E) $30 because the $700 is a sunk cost.
Step-by-step explanation:
The price of ticket is now a sunk cost, i.e. $700 and only minimum amount that can be earned and accepted is $30.
Sunk cost is an irreversible cost that is incurred because of faulty decision or less accurate forecast by companies or individuals, or even normal costs that is spent becomes a thing of past.
Usually decision makers choose not to spend more money on projects that incur more sunk costs and try to compensate that by making new ways. Sunk costs are like fires shot from a gun; you cannot recover them by any means.
So, $700 is now a sunk cost which couldn’t be brought back.