A customer needs to achieve a very aggressive RTO of 30 minutes or less. A critical requirement is a continuous availability and disaster recovery solution for the mainframe environment.<br /> What IBM solution should be recommended to this customer?()
A、Metro Mirror
B、Metro/Global Mirror
C、Geographically Dispersed Open Servers (GDOS)
D、Geographically Dispersed ParallelSysplex (GDPS)