Which VNX FLR option enables SEC Rule 17a4 (f) requirements?

A.
FLR-S

B.
FLR-E

C.
FLR-C

D.
FLR-W

Explanation:
http://www.emc.com/collateral/hardware/white-papers/h10684-vnx-file-level-retention-wp.pdf (page
7, last para)