Which of the following classes is defined in the TCSEC (Orange Book) as discretionary protection? 

Answer options:

A. C
B. B
C. A
D. D

A

Source: KRUTZ, Ronald L. & VINES, Russel
D., The CISSP Prep Guide: Mastering the Ten Domains of Computer Security, page 197. Also: THE source for all TCSEC "level" questions: http://csrc.nist.gov/publications/secpubs/rainbow/std001.txt