Damage to the NTFS compressed file

How much data is lost if a bad sector develops in the data area of the large text file stored using a native NTFS compression?

Exactly 512 bytes are lost.

At most 64KB of data around the damaged sector are lost.

Only data before the damaged point is readable. Anything after the damaged sector can not be recovered.

The entire file will be unreadable.

Optional - enter your name and comment. These comments may be published (subject to moderation).