(a) A retailer may advertise or hold out or state to the public or to any purchaser, consumer or user, directly or indirectly, that the tax or any part thereof imposed by this article will be assumed or absorbed by the retailer or that any part required to be added to the purchase price will be refunded, so long as:
(1) The retailer separately states the selling price of the property sold and the full amount of tax imposed by this article on such property; and