Exam 5V0-21.21 topic 1 question 23 discussion

An organization has two vSAN clusters managed by the same vCenter Server, each providing 100TB of storage. The first cluster runs at 75% of its storage capacity, and the second cluster runs at 50% of its storage capacity.
The company also has the following:
✑ An iSCSI array of 300TB. which runs at 76% of its capacity
✑ A NAS system of 200TB, which runs at 10% of its capacity
✑ A Fiber channel (FC) array of 300TB, which runs at 80% of its capacity
The administrator is asked to add an additional 25TB of storage to the first cluster. The administrator is also made aware that there is no budget to purchase new hardware and that the vSAN Storage Policy Based Management must be kept in place.
Which storage option will work for this use case?