What is the biggest benefit of using e$-$mail over traditional paper$-$based mail? $($Select the best answer$)$

E$-$mail is faster than traditional mail, which means that the customer can receive your response as soon as you compose it$.$

E$-$mail is the most appropriate means of handling sensitive issues.

E$-$mail is more secure$,$ private, and confidential than traditional mail.

E$-$mail is faster than traditional mail, which means that customers' needs can be handled more quickly.