An entrepreneur gathers the following information to make a decision on whether to stay open for business or to shut down permanently:
Future operating revenues = $18 million
Future operating costs = $14 million
Sunk costs = $8 million

The entrepreneur should:

A. shut down because the sunk costs are greater than zero.
B. continue to operate because the operating revenues exceed the operating costs.
C. continue to operate to help pay off the sunk costs.
D. shut down because the operating revenues are insufficient to cover the operating costs and sunk costs.