8. The following information is available for All-4-U Company for the year ending December 31, 2019: (Total 4 marks) Net Sales $5,000,000 Accounts Receivable December 31, 2018 $1,250,000 Cost of goods sold $3,500,000 Accounts Receivable December 31, 2019 $1,000,000 Operating Income $600,000 Net Income $400,000 A) Compute the gross profit ratio for 2019. Show formula B) Compute the operating margin ratio for 2019. Show formula C) Compute the net profit margin ratio for 2019. Show formula D) Compute the accounts receivable turnover for 2019. Show formula