Pinnacle Corp. budgeted $269,810 of overhead cost for the current year. Actual overhead costs for the year were $202,700. Pinnacle's plantwide allocation base, machine hours, was budgeted at 54,200 hours. Actual machine hours were 50,120. A total of 107,230 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.$1.89 per machine hour

b.$4.98 per machine hour

c.$2.52 per machine hour

d.$3.74 per machine hour