What does the word "emanating" in paragraph 5 mean

A．Because it can speed up the sending of messages.
B．Because it is a fashionable gadget to the businessman.
C．Because it is cheap and efficient.
D．Because it is a part of business life.

A．an ability to communicate with people with ease
B．getting the wrong person on the telephone
C．an inablity to find time to telephone the person
D．an inability to contact the person you phone