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Miller and Sons' static budget for 9,700 units of production includes $35,400 for direct materials, $53,900 for direct labor, variable utilities of $6,400, and supervisor salaries of $16,900. A flexible budget for 12,500 units of production would show Round your final answer to the nearest dollar. Do not round interim calculations. Oa. total variable costs of $112,600 Ob. direct materials of $45,619, direct labor of $69,459, utilities of $8,247, and supervisor salaries of $20,280 Oc. direct materials of $45,619, direct labor of $69,459, utilities of$8,247, and supervisor salaries of $16,900 Od. the same cost structure in total af ar