In the Context of Using Headings in Business Documents, Which

In the context of using headings in business documents, which of the following guidelines would improve the ease of reading?

A) Avoid using headings in complex messages.
B) Use different font styles and formatting for different headings.
C) As you develop your headings, make sure you accurately convey the contents of a section.
D) Use wordy prepositional phrases as headings.
E) Avoid using headings in information-rich messages.