Hello tutor my name is Nathan and my professor assigned an optional review paper before our exam on Tuesday. Unfortunately he doesn't tell me any of the answers, so I have no way to be sure if I have anything right. I don't want to learn the wrong thing, so could you answer these questions so I could have a study guide. Thank you tutor:)

Absorb and Variable inc. produced 20,000 units and sold 30,000 units. Assume there is $400,000 in beginning inventory under variable costing and $600,000 in beginning inventory under absorption costing. The following financial information is available for 2019. Selling price per unit $55 Variable manufacturing overhead cost per unit $20 Variable operating expense per unit $12 Fixed manufacturing overhead costs $150,000 Fixed operating expenses $116,000 a) Determine the operating income under the variable costing method. b) Determine the operating income under the absorption costing method. c) Which option would show the higher operating income if the production volume was 40,000 units instead of 20,000