Which of the Following Is Correct with Regard to Language

Which of the following is correct with regard to language differences as a factor in international promotion?

A) English is a more efficient and precise language than most others.
B) Advertisements in English require more print space than advertisements in most other languages.
C) Advertising agencies have found that it is not possible to set up worldwide agency networks that can coordinate a campaign's central theme while still allowing regional variations.
D) Advertisements in English require more air time than advertisements in other languages.
E) All of these are correct.