Walker Clothing Store had a balance in the Accounts Receivable account of $780,000 at the beginning of the year and a balance of $820,000 at the end of the year. Net credit sales during the year amounted to $8,000,000. The average collection period of the receivables in terms of days was O 30 days. 0 365 days 10 days O 37 days When a company has preferred stock the return on common stockholders equity is computed by dividing O net income by average common stockholders' equity O net income less preferred dividends by ending common stockholders' equity O net income by ending common stockholders' equity. O net income less preferred dividends by average common stockholders' equity