Which of the Following Guidelines Should Be Followed When Writing

Which of the following guidelines should be followed when writing a message carrying good-news?

A) The message should be written using the indirect approach of organizing information.
B) The prefatory material in the message should be explained in detail, and the main objective should be kept brief.
C) The objective or key point of the message should be presented at the end.
D) If parts of the objective require explanation, the explanations must be included in the message.
E) Phrases such as "as soon as possible" or "at your convenience" should be included at the end of the message.