Department W had 2, 609 units, one-third completed at the beginning of the period, 12, 776 units were transferred to Department X from Department W during the period, and 517 units were one half completed at the end of the period. What are the total number of units to be assigned cost on the cost of production report for Department W? Select the correct answer. 12, 776 units 15, 385 units 13, 293 units 517 units