Bronzit company estimated the following at the beginning of the year: assembly department testing department total overhead $700,000 $100,000 $800,000 direct labor hours 150,500 hrs. 40,500 hrs. 191,000 hrs. machine hours 37,000 hrs. 72,000 hrs. 109,000 hrs. bronzit uses departmental overhead rates. in the assembly department, direct labor hours are used to apply overhead. machine hours are used to apply overhead in the testing department. actual data for the month of may is as follows: assembly department testing department total overhead $50,000 $11,000 $61,000 direct labor hours 20,000 hrs. 2,500 hrs. 22,500 hrs. machine hours 3,500 hrs. 14,000 hrs. 17,500 hrs. if bronzit uses a plant wide overhead rate based on direct labor hours, instead of departmental rates, what is the predetermined overhead rate rounded to the nearest cent? a.$4.19 per direct labor hour b.$8.65 per direct labor hour c.$4.50 per direct labor hour d.$0.33 per direct labor hour e.$5 per direct labor hour