=+Cost per unit $ 2.65 $ 2.75 $ 2.63 $ 2.70 $ 2.75 ________ ________ ________ ________ ________ ________ ________ ________ ________ ________ Which of the following statements best interprets this information?

A. The total costs are out of control.

B. The product costs have steadily increased because of higher electricity costs.

C. Electricity costs have steadily increased because of lack of maintenance.

D. The unit costs reveal a significant operating problem.