on 26 Walsh Corporation has provided the following information: ered out of 3 g question Cost per Unit Cost per Period Direct materials $ 6.00 Direct labor $ 3.35 Variable manufacturing overhead 1.75 Fixed manufacturing overhead $ 8,800 Sales commissions $ 1.00 Variable administrative expense S 0,40 Fixed selling and administrative expense 4,000 $ $ For financial reporting purposes, the total amount of period costs incurred to sell 4,000 units is closest to Select one: O a $5,600 O b. $6,400 O c $4,000 O d. $9,600