Wits End manufactures hard candy. The budgeted conversion costs for its mixing operations are $1,015,000 (consisting of items such as direct labor, depreciation, and power), and the practical capacity of the operation is 140,000 machine hours. What is the conversion rate? a. $1.15 per machine hour b. $0.14 per machine hour c. $1.40 per machine hour d. $7.25 per machine hour