DIACAP applies to the acquisition, operation, and sustainment of any DoD system that collects, stores, transmits, or processes unclassified or classified information since December 1997. What phases are identified by DIACAP? Each correct answer represents a complete solution. Choose all that apply.

A. Validation
B. Re-Accreditation
C. Verification
D. System Definition
E. Identification
F. Accreditation