Which of the Following Modifications Should You Make When Writing

Which of the following modifications should you make when writing unsolicited cover letters?

A) Use a friendly,informal,and conversational style because there is no formal job opening.
B) Open immediately with a proposition about how you can add value to the company.
C) Be as elaborate as possible in explaining how much you learned from researching the company.
D) Add a section on areas of improvement so the hiring manager can see how serious you are about your career.
E) Do not mention the position you are applying for because no job opening exists.