Recall the Application About the Best Speed at Which to Sail

Multiple Choice

Recall the Application about the best speed at which to sail an ocean cargo ship to answer the following question(s) .
-Sailing an ocean cargo ship slower to save on the expense of fuel as opposed to sailing it faster to save time and therefore allow it to make more deliveries makes sense if the ________ of sailing slower is less than the ________ of sailing slower.

A) marginal benefit; marginal cost
B) marginal cost; marginal benefit
C) marginal benefit; opportunity cost
D) marginal cost; opportunity cost