If You Choose to Apologize in a Negative Message,you Should

Multiple Choice

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) always urge the reader to avoid legal action.