Declassification instructions could specify (1) a date of 25 years or less from the classification date, (2) a specific event likely to occur within 25 years, or (3) a 25X1 human exemption with no date of declassification. Which of the following is correct?

• A. A date of 25 years or less from the classification date
• B. A specific event likely to occur within 25 years
• C. A 25X1 human exemption with no date of declassification
• D. All of the above

Answer: (D)