大全2-16一个选项的翻译, 谢谢!

大全CR2-16

Advertiser: The revenue that newspapers and magazines earn by publishing advertisements allows publishers to keep the prices per copy of their publications much lower than would otherwise be possible. Therefore, consumers benefit economically from advertising.
Consumer: But who pays for the advertising that pays for low-priced newspapers and magazines? We consumers do, because advertisers pass along advertising costs to us through the higher prices they charge for their products.
Which of the following best describes how the consumer counters the advertiser’s argument?
(A) By alleging something that, if true, would weaken the plausibility of the advertiser’s conclusion
(B) By questioning the truth of the purportedly factual statement on which the advertiser’s conclusion is based
(C) By offering an interpretation of the advertiser’s opening statement that, if accurate, shows that there is an implicit contradiction in it
(D) By pointing out that the advertiser’s point of view is biased
(E) By arguing that the advertiser too narrowly restricts the discussion to the effects of advertising that are economic

请问各位NN, 关于E选项: By arguing that the advertiser too narrowly restricts the discussion to the effects of advertising that are economic , 本句that are economic是修饰advertising还是effects?  本句话是把讨论限制在广告的效果上,that are economic该如何翻译呢?