units were produced. ABC started the month with 300 units in beginning inventory, with unit product cost equal to this month's unit product cost. A total of 2,100 units were sold during the month at price of GH 14. Selling and administrative expense for the month, all fixed, totaled GH 3,600. What is operating income under variable costing? Select one: a. GH 11,340. b. GH 3,740. c. GH 7,980. d. GH 3,540. --- units were produced. ABC started the month with 300 units in beginning inventory, with unit product cost equal to this month's unit product cost. A total of 2,100 units were sold during the month at price of GH 14. Selling and administrative expense for the month, all fixed, totaled GH 3,600. What is operating income under variable costing? Select one: a. GH 11,340. b. GH 3,740. c. GH 7,980. d. GH 3,540