Pinnacle Corp. budgeted $266,700 of overhead cost for the current year. Actual overhead costs for the year were $236,790. Pinnacle's plantwide allocation base, machine hours, was budgeted at 53,090 hours. Actual machine hours were 52,480. A total of 100,610 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.$2.65 per machine hour

b.$2.35 per machine hour

c.$5.02 per machine hour

d.$4.46 per machine hour