(a) When a classification and/or comparison has been made of any samples submitted to a Classing Office direct from a public warehouse, the results of such classification and/or comparison may be stated in a Form A memorandum.

(b) When a classification and/or comparison has been made of any samples submitted by the owner of the cotton or the owner's agent, the results of such classification and/or comparison may be stated in a Form D memorandum.

(c) Form A and Form D memoranda shall not be deemed to be final certificates within the meaning of section 4 of the Act (42 Stat. 1517; 7 U.S.C. 54).