Bill's Has a Profit Margin of 5 Percent and a Dividend

Bill's has a profit margin of 5 percent and a dividend payout ratio of 20 percent. The total asset turnover is 1.6 and the debt-equity ratio is .4. What is the sustainable rate of growth?

A) 11.20 percent
B) 9.60 percent
C) 10.89 percent
D) 9.26 percent
E) 9.84 percent