Which two tasks does the Pluggable Storage Architecture (PSA) perform? (Choose two.)

A.
Handles I/O queueing to the logical devices.

B.
Handles physical path discovery, but is not involved in the removal.

C.
Handles physical path discovery and removal.

D.
Handles I/O queueing to FC storage HBAs.

Explanation:

When coordinating the VMware NMP and any installed third-party MPPs, the PSA performs the following tasks:
Loads and unloads multipathing plug-ins.
Hides virtual machine specifics from a particular plug-in.
Routes I/O requests for a specific logical device to the MPP managing that device.
Handles I/O queueing to the logical devices.
Implements logical device bandwidth sharing between virtual machines.
Handles I/O queueing to the physical storage HBAs.
Handles physical path discovery and removal.
Provides logical device and physical path I/O statistics.
Reference: http://pubs.vmware.com/vsphere-51/index.jsp?topic=%2Fcom.vmware.vsphere.storage.doc%
2FGUID-C1C4A725-8BE4-4875-919E-693812961366.html