When typing a classified letter, how would the subject line appear?

When typing a classified letter, how would the subject line appear?

• A. Subj: CLASSIFICATION MARKINGS (U)
• B. Subject: CLASSIFICATION MARKINGS (U)
• C. Subj: CLASSIFICATION MARKINGS (C)
• D. Subj: CLASSIFICATION MARKINGS (U) NOTES

Answer: (A)

In classified letters, the subject line uses the abbreviated header Subj: and ends with the classification level in parentheses. The (U) marking stands for Unclassified, signaling no special handling is needed beyond standard procedures. So the proper line is Subj: CLASSIFICATION MARKINGS (U). Using Subject: would be less consistent with this convention, and (C) would indicate a higher level of classification than Unclassified. Adding extra terms like NOTES isn’t part of the standard subject formatting for classification. This format lets the reader quickly grasp both the topic and the required handling.

In classified letters, the subject line uses the abbreviated header Subj: and ends with the classification level in parentheses. The (U) marking stands for Unclassified, signaling no special handling is needed beyond standard procedures. So the proper line is Subj: CLASSIFICATION MARKINGS (U). Using Subject: would be less consistent with this convention, and (C) would indicate a higher level of classification than Unclassified. Adding extra terms like NOTES isn’t part of the standard subject formatting for classification. This format lets the reader quickly grasp both the topic and the required handling.