Recommend a valid step to improve the read and write performance of a Certkiller .com with a Window 2000 host running Power Path Basic on a CX400.

A.
add a second HBA and reconfigure Power Path Basic

B.
add a second HBA and upgrade to PowerPath Enterprise

C.
add more physical memory to the CX400 cache

D.
re-zone to Fibre Channel switch to use all four SP sports