Pinacle Corp. budgeted $242,220 of overhead cost for the current year. Actual overhead costs for the year were $227,730. Pinacle's plant wide allocation base, machine hours, was budgeted at 48,950 hours. Actual machine hours were 52,360. A total of 106,650 units was budgeted to be produced and 98,000 units were actually produced. Pinacle's plant wide factory overhead rate for the current year is:

a.$2.14 per machine hour

b.$2.27 per machine hour

c.$4.65 per machine hour

d.$4.95 per machine hour