Karvel Corporation uses a predetermined overhead rate based on machine-hours to apply manufacturing overhead to jobs. For the month of August, Karvel estimated total manufacturing overhead costs at 300,000 and total machine-hours at 75,000 hours. Actual results for the period were manufacturing overhead costs of 290,000 and 75,000 machine-hours. As a result, Karvel would have: 1. applied more overhead to Work in Process than the actual amount of overhead cost for the year. 2. applied an amount of overhead to Work in Process that was equal to the actual amount of overhead. 3. applied less overhead to Work in Process than the actual amount of overhead cost for the year. 4. found it necessary to recalculate the predetermined overhead rate.