Which of the Following Is True About Cellphone Apps

Multiple Choice

Which of the following is true about cellphone apps?

A) Mobile app penetration slowly reached over 50% of all smart phone users in 2012.
B) The highest use of cellphone apps is for social networking.
C) The type of mobile apps that people access does not seem to vary according to the age of user.
D) The number of mobile apps a person downloads does not seem to vary by age of user.