Which statement describes the availability metrics for an HPE system’s high availability?

Which statement describes the availability metrics for an HPE system’s high availability?
A . All standard HPE servers are designed for 99.9999% availability.
B . A system consisting of HPE standard servers with an availability of 99.9999% and a storage with an availability of 99.99% will have a combined availability of 99.99999%.
C . A system with an availability of 99.99% can be expected to be in operational for 6 minutes or fewer per year.
D . A system with an availability of 99.999% will statistically not have an unscheduled downtime of more than 1 hour total in 10 years of operation.

Answer: B