Pinacle Corp. budgeted $242,600 of overhead cost for the current year. Actual overhead costs for the year were $204,330. Pinacle's plantwide allocation base, machine hours, was budgeted at 51,060 hours. Actual machine hours were 56,680. A total of 102,310 units was budgeted to be produced and 98,000 units were actually produced. Pinacle's plantwide factory overhead rate for the current year is: a.$4.00 per machine hour b.$4.75 per machine hour c.$2.00 per machine hour d.$2.37 per machine hour