Which costing technique is one referring to when stated that “the cost of a product being as certained where the product being the only one produced like bricks, coals, etc.”?

Under Single output costing or unit costing, the cost of a product is as certained, the product being the only one produced like bricks, coals,etc. Under Job costing, cost of each job is ascertained separately. It is suitable in all cases where work is undertaken on receiving acustomer’s order like a printing press, motor workshop, etc. Batch Costing is the extension of job costing. A batch may represent a number of small orders passed through the factory in batch. Each batch here is treated as a unit of cost and thus costing is done separately. Here cost per unitis determined by dividing the cost of the batch by the number of units produced in the batch. Under Contract Costing, the cost of each contract is as certained separately. It issuitable for firms engaged in the construction of bridges, roads,buildings etc. Under Process Costing, cost of completing each stage of work is ascertained, like cost of making pulp and cost of making paper from pulp.