Which statement is true about ASIS deduplication license with Data ONTAP 8.1?

A.
The existing 8.0 license key is used.

B.
A new license key is generated.

C.
The license is capacity-based.

D.
The license no longer exists.

Explanation:
Starting in Data ONTAP 8.1 neither deduplication nor compression require
any licenses, you can simply enable on a volume-by-volume basis
Reference: NetApp Data Compression and Deduplication Deployment and Implementation Guide:
Data ONTAP Operating in 7-Mode