Mattress Company advertises a special sale$$all bedding, half price. The ad does not state that the sale price does not include delivery or shipping costs. To avoid claims of deceptive advertising, Mattress should

a$.$ include the shipping cost in small print on its receipts.

b$.$ clearly and conspicuously disclose the shipping cost in its ads.

c$.$ not reveal the shipping cost.

d$.$ display the shipping cost in small print on ads displayed in stores.