MANAGEMENT

Detailed explanation-1: -Operating costs include direct costs of goods sold (COGS) and other operating expenses-often called selling, general, and administrative (SG&A)-which include rent, payroll, and other overhead costs, as well as raw materials and maintenance expenses.

Detailed explanation-2: -Operating expenses are the overhead costs a business incurs to maintain its day-to-day operations. Examples include the non-manufacturing component of payroll, rent, office supplies, and utility costs.

Detailed explanation-3: -Electrical power costs are the major operating expense for many power-intensive processes, such as air separation plants.

Detailed explanation-4: -In a power generating plant, the main operational cost is the cost of fuel burnt per unit of electrical energy generation. The cost of lubricating oil, maintenance, repairs, and salaries of operating staff are also accounted for the operating cost of the plant.