Which of the following are most likely to be direct costs of a steel manufacturer?

Direct costs are those costs of a product/service directly attributable/traceable to its production. Examples of direct costs including the following:

Materials and services bought-in: In steel manufacturer, raw materials are iron ores, scrap metal, coals, etc

Labour or wages: money paid to staff for the work involved in producing the product.

Other expenses: other charges incurred that can be specifically attributed to a particular product, batch or service