What
is the best definition of sunk costs in the proposals below?

Question

What
is the best definition of  sunk costs  in the proposals below?

Answer

Expected
future revenue that differ among alternative course of actions.

Answer

The
contribution to income that is forgone (rejected) by not using a limited
resource in its best alternative use.

Answer

Costs that are unavailable
because they cannot be changed no matter what action is taken.

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