Final answer:
Correct markings for classified material include 'Top Secret', 'Classified', and 'Confidential'. 'Unclassified' is not a classification level. These markings help in ensuring proper handling of sensitive information.
Step-by-step explanation:
When addressing classified material, certain markings must be on the outer wrapper to indicate the level of classification and handle the material accordingly. The correct markings that should be on the outer wrapper are A) Top Secret, B) Classified, and C) Confidential. Unclassified is not a classification level but rather an indication that the information is not sensitive and can be made public without harm. The classification markings ensure the appropriate handling, dissemination, and storage of sensitive information in accordance with national security regulations.