Which of the Following Is True of the Various Implications

Which of the following is true of the various implications for service marketers?

A) Many service firms have been criticized for not using advertising as a major element of the promotion mix.
B) The sum total of the marketing mix elements cannot predict the total impact of a firm's marketing strategy.
C) Unlike tangible products,services are not subject to distribution in the marketing sense of the word.
D) The slack created by restricting one element cannot be compensated by heavier emphasis on another.