In Terms of Developing Questions,your Text Identified Several "Shoulds" of Question

Multiple Choice

In terms of developing questions,your text identified several "shoulds" of question wording.Which of the following is NOT a "should"?

A) The question should be focused on a single issue or topic.
B) The question should be brief.
C) The question should attempt to cover as many topics as possible in order to reduce the questionnaire's length.
D) The question should be grammatically simple.
E) The questions should be crystal clear.