Using the following budget data for Valley Corporation, which produces only one product, calculate the company's predetermined factory overhead application rate for variable overhead. Units to be produced Units to be sold Indirect materials, varying with production Indirect labor, varying with production 11,000 10,000 $1,000 10,000 Factory supervisor's salary, incurred regardless of 20,000 production Depreciation on factory building and equipment. 30,000 Utilities to operate factory machines 12,000 Security lighting for factory 2,000 Selling, general and administrative expenses 5,000 AO $2.09 BO $2.30. CO $4.73 DO $5.20