the answer is A. Salutation
A comma should follow the closing if there is a colon following the salutation.
Both used to provide info and details also they both have a heading, body, salutation, closing, and signature.
"from an admirer"
Letters are written in a certain form in order to convey a message clearly and formally. The format typically includes the sender's and recipient's addresses, date, salutation, body, and closing. Following this structure helps to organize the information effectively and maintain professionalism in communication.
It is useful when you don't have a contact name (sender's name) because it doesn't require an opening (or closing) salutation. There is no opening salutation or complimentary closing, and nothing is indented.
deepest regards
Note
A friendly letter typically includes the date, recipient's address, salutation ("Dear [Name]"), introduction, body, closing, and signature. Additional parts may include a postscript (P.S.), envelope, and any enclosures.
Using a colon in the salutation and a comma in closing.
comma
Date, salutation, body, closing, signature, enclosures
Date, salutation, body, closing, enclosure