The word "prospective" in the first sentence of the passage means ______.

A．includes all forms of sales appeals to the prospective buyer
B．is produced mainly for newspaper or television
C．is an activity by which real products are shown to buyers
D．uses post as a chief means to contact prospective buyers

A．will influence the price of paper industry
B．is a product delivered to the final user
C．is a consumer product
D．is an industrial product