A storage administrator receives a warning message that one of the thin pools in the Symmetrix is low on storage space. The pool contains a large number of thin devices that have been fully preallocated but have small amounts of used space. What is the least disruptive and most cost effective way to make more thin pool space available?

A.
Run zero space reclamation on the thin devices

B.
Add more data devices to the thin pool

C.
Unbind the underutilized thin devices from the pool

D.
Rebalance the pool