janets company is affected by a tax that accumulates at each stage of processing in the value chain of its products. the tax is calculated as a percentage of the difference between the sale and purchase price of a product. each business in the products vakle chain is required to bill this tax to its customers and pay the tax on its purchases, crediting the amounts it paid against the amounts it paid against the amounts due to its own activities. this situation illustrates which type of international taxation? sales tax, indirect tax, value-added tax, direct tax, or corporate income tax