Which of the Following Openings Is Best for an Invited

Which of the following openings is best for an invited or solicited message?

A) "Because of my specialized training in marketing through social media sites and experience in the advertising industry, I believe I have the qualifications required to take up the position of 'Social Media Marketing Manager' as listed on your company's website."
B) "I have attached a résumé along with this letter that extensively covers my education and work experience and I am sure they will make me eligible for one of the positions in the firm."
C) "I would like to apply for an internship at your firm. I have strong academic credentials and references that support my request for an internship. I would like to point out that I am very keen on pursuing at your firm to the extent that I am willing to do an unpaid internship in an area of my interest."
D) "I have attached a résumé for a possible job offer from your company."
E) "I can assure you that I am well suited for such a post due to my experience, education, and personal qualities."