ABC. Co. has sales of $8,000,000. COGS is 40%. Operating expenses(excl. depr) 30% of sales. Depreciation expense is $50,000, Interest expense 1% of sales. Tax rate 30%. Dividend payout 40%. a. What is their gross profit margin? b....operating profit margin? c. ..net profit margin? d. ...added to retained earnings? e...dividend per share