Which of the following guidelines should you follow while choosing a level of formality for a business document?

A) Use a formal style even if the document is for someone you have interacted with.
B) Use contractions if the document is for someone you are unfamiliar with.
C) Avoid using abbreviations in emails even if they are part of your group's culture.
D) Pay particular attention to your style of writing when conveying bad news.
E) Use personal pronouns and second-person in reports to make them more efficient.

If 5,000 units are produced, the total amount of manufacturing overhead cost is closest to:

A) $20,500
B) $23,000
C) $18,000
D) $19,250