The correct answer is: A. job, process
Job costing is a type of costing system that is used to track the costs of individual jobs or batches of products. It is often used in industries where products are made to order, such as the biscuit industry.
Process costing is a type of costing system that is used to track the costs of a process or production line. It is often used in industries where products are made in large quantities, such as the steel industry.
Batch costing is a type of costing system that is used to track the costs of a batch of products. It is often used in industries where products are made in batches, such as the chemical industry.
Operation costing is a type of costing system that is used to track the costs of a specific operation or activity. It is often used in industries where there are many different operations or activities, such as the automotive industry.
In the biscuit industry, each biscuit is a unique product that is made to order. This means that the costs of each biscuit must be tracked individually. Job costing is the best type of costing system to use in this situation.
In the steel industry, steel is made in large quantities. This means that the costs of producing steel can be averaged over a large number of units. Process costing is the best type of costing system to use in this situation.