The Rapid Increase in the Number of New Smartphones in Developing

Multiple Choice

The rapid increase in the number of new smartphones in developing countries ________ been accompanied by a corresponding increase in mobile marketing because ________.

A) has; companies see the benefits of advertising this way
B) has; wireless data are fairly inexpensive
C) has not; companies do not see the benefits of advertising this way
D) has not; wireless data are still too expensive