Which IBM XIV storage hardware integration capability does this customer require?

A customer has a VMware environment with host resource utilization concerns. The customer wants to overcome this when purchasing the next storage device.

Which IBM XIV storage hardware integration capability does this customer require?
A . vStorage API for Site Recovery Manager (VASRM)
B . vStorage APIs for Array Integration (VAAI)
C . vStorage APIs for Data Protection (VADP}
D . vStorage APIs for Multipathing (VAMP)

Answer: B