If you choose to apologize in a negative message,you should

A) phrase the apology in a conditional manner ("If I have offended anyone ...") .
B) imply that not all of the blame lies with you or your company.
C) be sincere and make it a true apology.
D) always demonstrate sincerity,but never accept blame.
E) explain what the reader should do to avoid similar issues in the future.

When apologizing in a negative message, it is important to be sincere and make it a true apology. This shows accountability and willingness to take responsibility for any mistakes or issues that may have occurred. Phrasing the apology in a conditional manner (A) or implying that not all of the blame lies with you or your company (B) can come across as insincere and shift the focus away from the apology. Similarly, always demonstrating sincerity but never accepting blame (D) can also come across as insincere and deflective. While explaining what the reader should do to avoid similar issues in the future (E) can be helpful, it should not be the focus of a sincere apology.