A company's master budget for October is to manufacture and sell 30,600 units, for a total sales revenue of $282,000, total variable costs of $171,840, and total fixed costs of $25,200. The company actually manufactured and sold 32,600 units, and generated $51,000 of operating income in October. The sales volume variance, in terms of operating income, for October (rounded to the nearest whole dollar) was: Multiple Choice $7,200 favorable $25,800 favorable. $18,492 favorable. $5,308 favorable