Q4) Sum Corporation has the following data for the last two years: Variable costing net operating income, last year Variable costing net operating income, this year Fixed manufacturing overhead costs deferred in inventory under $70,000 $80,000 absorption costing, last year Fixed manufacturing overhead costs released from inventory under absorption costing this year $22,000 $30,000 Required: a. Determine the absorption costing net operating income last year. Show calculation! 6. Determine the absorption costing net operating income this year. Show calculation