Big Blue Pools makes swimming pool equipment. Big Blue estimates total manufacturing overhead costs next year to be $2,800,000. The estimated direct labor will be 40,000 hours. The estimated cost for the labor will be $2,000,000. The machines are expected to run for 70,000 hours. If managers determine the best allocation basis (cost driver) is the direct labor hours, what is the predetermined overhead rato? O A $70 per direct labor hour OB. $40 per direct labor hour OC. 140% of the direct labor cost OD 514 per direct labor dollar