Advertising Is Subject to the Law of Diminishing Returns, Which

Advertising is subject to the law of diminishing returns, which means that

A) for any advertised product, a point is eventually reached at which additional advertising produces little or no additional sales.
B) advertising leads to maximizing of sales and those higher sales would always mean more profits.
C) advertising is concerned with measuring the effects of specific ads or campaigns.
D) advertising is a competitive weapon and emphasis should be given to the strategic aspects of the advertising function.