A TCB should be designed, developed, and maintained with standards that enforce protection at each stage in the systems life cycle. This is called:

A.
Life cycle assurance

B.
Operational assurance

C.
Covert timing assurance

D.
Covert storage assurance

Explanation:
Life cycle assurance means that a TCB is designed, developed, and
maintained with formally controlled standards for each stage in the systems life
cycle.