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You are writing a business e-mail, which of the following is an example of good e-mail etiquette?
A.
A proper, direct subject line is not a necessary par of business e-mail.
B.
Use abbreviations as much as possible and pay no attention to the spelling and grammar.
C.
Review the content of your e-mail prior to sending it out.
D.
Writ the reason for the letter directly.