Pinnacle Corp. budgeted $234,960 of overhead cost for the current year. Actual overhead costs for the year were $210,700. Pinnacle's plantwide allocation base, machine hours, was budgeted at 49,630 hours. Actual machine hours were 44,770. A total of 103,820 units was budgeted to be produced and 98,000 units were actually produced. Pinnacle's plantwide factory overhead rate for the current year is: a. $2.03 per machine hour b. $2.26 per machine hour c. $4.73 per machine hour d. $4.25 per machine hour