The Proper Sequence for the Standard Parts of a Letter

The proper sequence for the standard parts of a letter is

A) inside address, heading, date, salutation, body, complimentary close, typewritten name.
B) date, heading, inside address, salutation, body, typewritten name, complimentary close.
C) salutation, date, heading, inside address, body, complimentary close, signature block.
D) heading, date, inside address, salutation, body, complimentary close, signature block.