Operating expenses is also known as operating expenditure, operational expenditure or operational expense.
These expenses are expenditures that a business incurs to engage in activities associated with the production of goods or services. It is the expense required for the day to day running and functioning of a business.
It is the cost of developing non consumable parts for the product or system. These expenses are reported on the company’s income statement. Examples of operating expenses may include: office salaries, cost of advertising, rents and sales commissions.
Financial expenses is wrong because it deals with the expenditure incurred by an organization which represent interest payable on loan, taxes and in renting an asset property.
The marketing expense is also wrong because it includes the production cost of goods and services they are the indirect expenses done in the organization. Direct expense is also wrong because it include cost of sales of goods.