The Barrister fixed costs are as follows Miug Company manufactures plastic mugs that ell to wholesalers for $4.60 each. Variable and Variable Costs per Unit Fixed Costs per Month Manufacturing: Direct materials Direct labor Factory overhead Selling and adm. $0.69 0.81 0.57 $2.07 Factory overhead Selling and adm. $ 9,200 6,900 $16.100 Total 0.46 $2.53 Total Barrister Mug produced and sold 11,500 cups during April 2016. There were no beginning or ending inventories. Required a. Determine Barrister Mug's monthly break-even point in units. b. If monthly sales increase by 575 cups, what will be the change in monthly profits? c. If Barrister Mug is now subject to an income tax of 40 percent, what dollar sales volume is required to earn a monthly after-tax net income of $13,800