Part 3A costs Division A $17 to make (direct materials are $5, direct labor is $2, variable manufacturing overhead is $6, and fixed manufacturing overhead is $4). Division A sells Part 3A to other companies for $20. Division B can use Part 3A in one of its products. Division A has enough idle capacity to produce all of the units of Part 3A that Division B would require. What is the lowest transfer price at which Division A should