A customer is planning a PowerHA cluster split across two sites. The sites are located 10km apart. There is aDS8000 storage array at each site with SAN connectivity between the two arrays. There are only enough IPinterfaces for one IP network in this cluster. How can they ensure that disk data is automatically mirrored and synchronized between sites？（）

• A、Purchase PowerHA/XD license
• B、Purchase PowerHA with GLVM license
• C、Implement PowerHA with split-site LVM
• D、Implement PowerHA with cross-site LVM