CR help!!! some one help!!!!

<p>Early twentieth-century writers Ernest Hemingway and
Edna St. Vincent Millay owed much of their public
visibility to self-promotion: both were adept at
their own literary works
(A) Marketing
(B) modernizing
(C) duplicating
(D) finalizing
(E) editing</p>

<p>Help! i chose E. the answer is A. why?</p>

<p>“Self-promotion” means something really similar to “marketing” (for oneself), so choice A fits better.</p>