could I please get an explanation for both of these please? I'm not sure what I'm doing

O out of 1 points Question 12 Jennifer Company reports the following amounts for 2019: Net income: $500,000 Average common stockholders' equity: $4,000,000 Preferred dividends: $100,000 Par value preferred stock: $200,000 The 2019 rate of return on common stockholders' equity is (read the above information carefully) Selected Answer: D. 12.5%. Answers: A. 10.0% B. 5.0%. C. 25.0%. D. 12.5%. Question 13 O out of 1 points Retained Earnings represents: Selected D. cash available for expansion and growth Answer: Answers: A. the amount inititally invested in the business by stockholders B. cash available for dividends C. income which has been reinvested in the business D. cash available for expansion and growth