Your Mobile Device Has Gone Over Its Subscribed Data Limit

Multiple Choice

Your mobile device has gone over its subscribed data limit the past two months. During this time, you have noticed that the device runs hotter than normal and data speeds seem slower than usual.
Which of the following should you consider as a cause for these issues?

A) The device is running low on available storage space.
B) The battery is failing and will need to be replaced.
C) The device needs an operating system update.
D) The device is infected with malware.