The following were the income statements and balance sheets of International Trading Limited for 2019 and 2020. The corporate tax rate was 16.5% for the two years. International Trading Limited's Income Statement (all figures in thousands) 2020 2019 Sales $900,000 $800,000 COGS $360,000 $360,000 Other Expenses $135,000 $120,000 Depreciation $90,000 $96,000 Interest $45,000 $56,000 International Trading Limited's Balance Sheet (all figures in thousands) 2020 2019 Cash $60,000 $100,000 Accounts Receivable $240,000 $150,000 Inventory $300,000 $250,000 Fixed Assets $600,000 $500,000 Total Assets $1,200,000 $1,000,000 Accounts Payable $240,000 $200,000 Long-Term Debt $360,000 $400,000 Common Equity $600,000 $400,000 Cl(a) Present International Trading Limited's 2019 & 2020 income statement and balance sheet in the common-size format. What is the usefulness of this format? (8 marks) ci(b) What were the 2019 & 2020 Profit Margin? Any improvement over the period? (8 marks) C1(c) How can a company, such as International Trading Limited, increase its Return on Assets (ROA) and its Return on Equity (ROE)? (4 marks)