PT. Widya, has total assets as of the end of July, 2020, IDR 100,000,000. Sales value during the month July, 2020 IDR 25,000,000, net income IDR 10,000,000. Total debt of IDR 50,000,000 and equity Rp 50,000,000,- The amount of dividends distributed is 10% of the net profit value. Calculate: a. Net Profit Margin, Return on Assets and Return on Equity. b. Financial utilization rate c. Business Retention Rate d. Sustainable Growth Rate