Phishing or / vishing call c:
The # sign, is what excel uses to indicate that a cell is not wide enough to display a formula or function result
E-mail stands for Electronic mail. It is a method of exchanging messages ("mail") between people in a telecommunication network with the usage of electronic devices. There is a sender and a receiver for any given message, and they switch positions in turn.
The statement that E-mail is an temporary message medium is false. E-mail can be kept forever and are not temporary.