The correct answer is C. During an image verification operation, NetBackup validates the backup image stored on backup storage by reading the backup volume and comparing what is present on that storage with the metadata recorded in the NetBackup catalog. Cohesity NetBackup documentation states that NetBackup verifies backup contents “by reading the volume and comparing its contents to what is recorded in the NetBackup catalog.” It also clarifies that this operation does not compare the backup image with the original client disk contents. Therefore, the validation scope is the readability and catalog consistency of the stored backup image, not a live comparison against the client file system and not a primary-server data check. This distinction is important operationally: image verification confirms that NetBackup can locate and read the blocks belonging to the backup image and that the stored image aligns with catalog records. It is not a restore test and does not prove that current client data is unchanged. References/topics: Catalog utility, Verify backup images, bpverify, NetBackup catalog image validation, and backup storage readability verification.