Which of the Following Must Be True of a Buffer

Multiple Choice

Which of the following must be true of a buffer for it to be effective?

A) It should put the reader in a negative frame of mind to accept the bad news.
B) It should convey the bad news explicitly in the beginning of a message.
C) It should convey bad news to a reader ambiguously to avoid antagonizing him or her.
D) It should provide a smooth, natural transition to the body of the letter.
E) It should convert bad news into good news through persuasion.