28. The Corp. uses predetermined factory overhead rate based on direct labor hours. For the month of January, the corp. budgeted factory overhead was P600,000 based on a budgeted volume 300,000 direct labor hours. Actual factory overhead amounted to P650,000 with actual direct labor hours of 320,000. How much was the over or under-applied factory overhead? O d. 50,000 over-applied a. 10,000 under-applied O b. 10,000 over- applied O c. 50,000 under-applied