Which of the Following Is a Reason Why Greetings and Names

Which of the following is a reason why greetings and names are omitted from emails?

A) People do not like being greeted or having their names called out very often.
B) Omitting names and greetings saves space as two lines can consume a significant amount of space.
C) Some professionals view emails as the equivalent of memos, which traditionally omit names and greetings.
D) Most people are feelers and are not inclined toward greeting others.
E) Since emails are typically forwarded to several other people by the first recipient, it is inappropriate to mention the name of only one recipient in the email.