Explicit cost: It refers to the actual expenditure of the production factor required by the manufacturer to purchase or lease in the production factor market, that is, the amount of money paid by the enterprise to the owner of the economic resources other than the enterprise, such as paid production costs, wage costs, marketing Expenses, etc. , so it is a tangible cost. According to the above definition, which of the following is amounts that are not explicit costs? ['The company paid 10,000 yuan to rent the mall lobby for on-site marketing.', "Raw material prices increase the cost of the company's product unit by 10,000 yuan.", 'Plants worth 10,000 yuan per square meter.', '0,000 yuan monthly salary paid by the company to the department manager.']