Identify a True Statement About Cellphone Communication

Identify a true statement about cellphone communication.

A) Cellphone communication dramatically deteriorates performance among salespersons.
B) Confidential or sensitive information can be effectively shared through cellphones.
C) Cellphone communication is cost-effective when communicating with people located in several locations and time zones.
D) The radio frequencies that transmit the voice signals in cellphone communication can be picked up by other equipment.