in 2019, Simelton Corp. had total sale of $150 million, and net profit margin of 4%. At the beginning of 2019, Simelton Corp. had a debt-to-equity ratio of 2.8, and total liabilities of $350 million. The firm retained $4 million of its 2019 net income, and distributed the rest in form of dividends. What is Simelton Corp. sustainable growth rate? 6.1% 4.0% 5.3% 3.2%