According to the Sales Netiquette Checklist, Which One of the Following

Multiple Choice

According to the sales netiquette checklist, which one of the following is correct:

A) It is okay to use first name of the recipient especially if it's the first time emailing them
B) For highly formal email correspondence, use a letterhead
C) You can be informal with international emailing with your client
D) You should always include all of the previous emails in your reply to a specific email
E) Use apathy as much as possible before pressing the send button