Walsh Corporation applies manufacturing overhead on the basis of direct labor-hours. At the beginning of the most recent year, the company based its predetermined overhead rate on total estimated overhead of $239,700 and 4,700 estimated direct labor-hours. Actual manufacturing overhead for the year amounted to $242,000 and actual direct labor- hours were 4,600. The overhead for the year was: Select one: a. $5,100 underapplied Ob. $7,400 underapplied c. $7,400 overapplied d. $5,100 overapplied