As part of the budgeting process, Wickham Company developed the master budget for June. The manager, Alex, is in the process of preparing the flexible budget and understanding the actual results for June. Static Budget Flexible Budget Actual Results For June For June For June Sales volume (in units) 25,000 20,000 Sales volume $1,250,000 $- $1,000,000 Sales volume 600,000 512.000 Contribution margin 650,000 488,000 Capacity-related (fixed) costs 450,000 458,000 Operating profit $ 200,000 $30,000 The primary reason for low operating profits in June was: Select one: O a. increased capacity-related (fixed) costs. b. the flexible budget variance for flexible (variable) costs. C.a poor management accounting system. o d. lower sales volume than planned.