For the Year ended December 2020. Alaska company, reported net income of $6,000 on revenues of 556,000 Interest expense totaled $800, while preferred stock dividends totaled $300 Average total assets for 2020 wore 517 500, and average total liabilities for 2020 wore 59,000 Average preferred shareholders equity totaled $2,000. The income tax rate is 20% Required: Calculate the following 1 The ROA for Alaska company 2 The amount of net income to common shareholders of Alaska company derived from the excess return on creditors' capital 3. The excess return on preferred shareholders' capital of Alaska company 4. The return on common shareholders' capital of Alaska company