is it choice c or d and why?

In its most recently completed period, Bella Company produced 250,000 units and sold 221,500 units of its single product. What would have happened to Bella's operating income in this period under the following costing methods if the company had produced 28,500 fewer units? (Assume sales volume remains constant and Bella has both fixed and variable manufacturing costs.) Variable Absorption costing costing CHOICE No Increase effect CHOICE Decrease Increase B CHOICE Decrease Decrease CHOICE No Decrease D effect O CHOICE A O CHOICE B CHOICE CHOICED None of the above