2 points 28) Charlotte receives a business letter in which the writer provides the pronoun list: they, them, and their. Considering this, which of the following courtesy titles should Charlotte use for her response to the letter? * O A) Mr. O B) Mrs. OC) Mx. OD) Ms. E) Miss 29) A(n) is primarily used to represent the writer and their topic rather formally to an external audience. 2 points O A) memorandum O B) email C) instant message OD) text message E) letter