Ashton Inc., an electronics company, estimates total factory overhead cost of $450,000 for the year and an activity base of 25,000 direct labor hours. If the actual labor hours are 29,200 and the actual factory overhead is $720,000, the factory overhead is _____ by _____. a. underapplied; $194,400 b. overapplied; $194,400 c. underapplied; $219,400 d. overapplied; $219,400