How large are the indexes expected to grow?

An organization is planning for a PST migration. Investigations reveal there are approximately 2TB of PST files to migrate. After the migration, the data stored to the Vault Store Partition is expected to be 50% or less compared with the original data size. The indexing level will be left at the default and the storage team is planning for the migration by adding additional storage for Indexes.

How large are the indexes expected to grow?
A . Up to 70GB because PST files typically contain attachments that contain little or no text.
B . Up to 103GB because the deduplication is estimated to be approximately 50% of the original size.
C . Up to 150GB because the deduplication is estimated to be approximately 50% of the original size and PST files contain additional MAPI attributes.
D . Up to 246GB because the index is based on a calculation of the original PST file size.

Answer: D