Under a job-order costing system, the dollar amount transferred from Work in Process to Finished Goods is the sum of the costs charged to all jobs:

completed in the period

Explanation:

Job order costing system refers to the system when small batches of the products are ordered by the customers. It is useful in knowing the cost that's used in the manufacturing of each product.

It's usually used when different products are being produced and the cost for each individual job need to be calculated. Under a job-order costing system, the dollar amount transferred from Work in Process to the finished goods will be the sum of the costs that's charged to all jobs that are completed in the period.