A manufacturing company applies factory overhead based on direct labor hours. At the beginning of the year, it estimated that factory overhead costs would be $349,712 and direct labor hours would be 43,714. Actual factory overhead costs incurred were $401,341, and actual direct labor hours were 52,258. What is the amount of overapplied or underapplied manufacturing overhead at the end of the year? a. $16,723 underapplied b. $68,352 underapplied c. $418,064 overapplied d. $16,723 overapplied