Which of the Following Factors Increases the Possibility of Standardizing

Which of the following factors increases the possibility of standardizing a company's advertising in its foreign markets?

A) Satellite-beamed cable TV is less common.
B) Magazines and newspapers do not cross national borders.
C) International tourist travel is very limited.
D) Television broadcasts for an audience in one country often reach audiences in other countries.
E) None of the above factors increases the possibility of standardizing a company's advertising in its foreign markets.