What are the maintenance principles in sustainment?

What are the maintenance principles in sustainment?

• A. Commanders ensure equipment is maintained, preventive maintenance is foundational, and readiness and safety are prioritized.
• B. Commanders audit budgets for maintenance and rely on contractor maintenance only, prioritizing speed over safety.
• C. Maintenance is conducted only after failures, and readiness is not a priority.
• D. Equipment maintenance is outsourced entirely with no in-house preventive maintenance.

Answer: (A)