【单选题】The use of heat pumps has been held back largely by skepticism about advertisers’ claims that heat pumps can provide as many as units of thermal energy for each unit of electrical energy used, thus ap...
A.
Concentrate your advertising firmly on financially relevant issues such as price discounts and efficiency of operation.
B.
Focus your advertising campaign on vague analogies and veiled implications instead of on facts.
C.
Do not use facts in your advertising that will strain the prospective client's ability to believe.
D.
Do not assume in your advertising that the prospective clients know even the most elementary scientific principles.