A legacy web application, which is being used by a hospital, cannot be upgraded for 12 months. A new vulnerability is found in the legacy application, and the networking team is tasked with mitigation. Middleware for mitigation will cost $100,000 per year. Which of the following must be calculated to determine ROI? (Choose two.)
A. ALE
B. RTO
C. MTBF
D. ARO
E. RPO
Correct Answer: AD