Please help with 25-28 please. show work if need be please

Sisters Corp expects to earn $6 per share next year (E1=6). The firm's return on equity (ROE) is 15% and its plowback (retention) ratio is 60%. The firm's market capitalization rate (cost of equity) is 10%. Assume the Gordon model for valuation purposes. 25. What is the firm's sustainable growth rate of dividends? A) 11% B) 10% C) 6% D) 15% E) 9% 26. What is the firm's intrinsic value? A) $340.0 B) $240.0 C) $160.0 D) $600.0 E) $440.0 27. What is the firm's cash-cow value? A) $50.0 B) $200.0 C) $100.0 D) $60.0 E) $80.0 28. What is the firm's present value of growth opportunities (PVGO)? A) $140.0 B) $190.0 C) $180.0 D) $25.0 E) $60.0