A Mobile Phone User in Your Company Is Experiencing Dropped

Multiple Choice

A mobile phone user in your company is experiencing dropped phone calls. While interviewing the user, you determine the problem started after she checked her email this morning. No other mobile devices in the organization are dropping calls.
Which of the following is the most likely reason for the dropped calls?

A) Cellular service is weak in the office building.
B) Malware is interfering with the calls.
C) The user is connected to an unauthorized Wi-Fi network.
D) The user has exceeded the limit on her data plan.