David wants to purchase a new television specifically compatible with his new home theatre equipment. He approaches Paul, a salesman at a large electronics store, who makes inquiries respecting his system and advises him that a particular television would be "completely compatible." David makes the purchase, only to discover at home that the television is not compatible at all. If the electronics store refused to reverse the transaction, which of the following scenarios would result in David not being successful in suing Paul or the electronics store for negligence