At the beginning of the year 20x5, Marsha Co. had a balance of $206300 in work in process, represented by the following two jobs: Job A Job B Direct materials $13830 $27299 Direct labour (5081 hours) $20514 $28607 $34344 $55906 Marsha Co. applies overhead based on direct labour costs. What was the predetermined overhead rate used in 20x4 to apply overhead? Select one: O a. $40.60 O b. $7.21 O c. $9.67 O d. $2.36