A firm's net income is $260,000 on sales of $31.5 million. Average assets for the period were $7 million.For the year: A. Margin was 5%, turnover was 1.2, and ROI was 6%.

B. Margin was 6%, turnover was 1.5, and ROI was 6%.

C. Margin was 4%, turnover was 1.2, and ROI was 4.8%.

D. Margin was 1%, turnover was 4.5, and ROI was 4.5%.