Which of the Following Is True About a Routine Inquiry

Which of the following is true about a routine inquiry that seeks only one piece of information?

A) The message can be concluded immediately after asking for the information.
B) Such a message restricts the sender from adding any extra explanation related to the query.
C) The length of the message must be kept to a minimum by excluding explanatory information.
D) Such a message makes it mandatory for the writer to use the indirect approach.
E) The message requires that the writer use the we-viewpoint in addressing the reader.