A manufacturing company applies factory overhead based on direct labor hours. At the beginning of the year, it estimated that total factory overhead costs would be $329,900 and direct labor hours would be 43,500. Actual manufacturing overhead costs incurred were $308,200, and actual direct labor hours were 51,900. What is the predetermined factory overhead rate per direct labor hour?

a. $6.07

b. $11.38

c. $7.58

d. $9.10