The Beginning Inventory of Department No

The beginning inventory of Department No. 3 was zero. During May, 2,500 units were processed in the department at a cost of $5 per unit. All 2,500 of these units were transferred to Department No. 4 in May at a total cost of $17,500. The unit cost of goods transferred to Department No. 4 in May was:

A) $5.00.
B) $6.00.
C) $7.00.
D) $1.00.