The correct answer is process costing.
Process costing is a type of costing system that is used in industries that produce large quantities of homogeneous products. In process costing, costs are accumulated by process or department, and then assigned to units of product using a predetermined cost per unit.
Refineries are a good example of an industry that uses process costing. Refineries produce large quantities of homogeneous products, such as gasoline, diesel fuel, and jet fuel. The costs of producing these products are accumulated by process, such as the distillation process or the cracking process. These costs are then assigned to units of product using a predetermined cost per unit.
The other options are not correct because they are not types of costing
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