Deals Inc Provides Its Sales Representatives with Phones to Use in in the Ordinary

Deals Inc. provides its sales representatives with phones to use in the ordinary course of business. Deals monitors the employees' electronic communications made through the phones. This is

A) a violation of the rights of the employees.
B) within the rights of the employer even if it did not provide the phones.
C) a subject for dispute resolution by the phone service.
D) a "business-extension exception" under the Electronic Communications Privacy Act.