The statements are true (T) or false (F). Justify your answers. 1) _____ The readjustments must be invoiced with IVA(sales and service tax) only in that part that exceeds the variation of the UF(promotion unit). 2) ______ The request for a refund of taxes paid in excess by article 126 of the tax code requires that the respective Credit Note has been issued and that there is IVA(sales and service tax) to be paid in the month in which the refund is requested. 3) ______ At the time of the termination of a company's business, Tax Credits can be attributed to the sale or liquidation of the establishment or of the movable or immovable tangible assets that comprise it and if there is still a remainder, to all the taxes of the the rent. 4) ______ In the case of a false invoice, if the taxpayer has had knowledge or participation in the falsification of the invoice, he will lose the right to Tax Credit, unless it is proven that the tax has been charged and effectively reported in the fiscal coffers by the seller. 5) ______ The export of services differs from that of goods, in that the former requires a prior qualification from Customs