Mark owns a cattle ranch near Hugo, Oklahoma. Mark is currently producing beef at an output level where marginal revenue exceeds marginal cost. In order to
maximize his profit, Mark should
O A. decrease his output.
OB. shut down his ranch.
O c. not change his output.
OD. increase his output.
O E. probably change his output, but more information is needed to determine if he should increase, decrease, or not change it.