Which of the following statements is false?

A. A decrease in the asset turnover ratio results in a decrease in the return on assets ratio.

B. An increase in average total assets results in a decrease in both the asset turnover ratio and return on assets ratio.

C. A decrease in the asset turnover ratio results in a decrease in the net profit margin ratio.

D. An increase in the net profit margin ratio results in an increase in the return on assets ratio.