Which 3 of these types of data can't be restored using Online Back-up and Restore?

The correct answer identifies types of data that cannot be restored using the Online Backup and Restore feature. Exchange rates, custom reports, and unreviewed bank feeds are specifically excluded from restoration processes in various accounting systems.

Exchange rates are often updated continuously and may be retrieved from external sources rather than being stored within the backup itself. Custom reports are generated based on specific user-defined parameters and settings, which means that they depend on the existing data setup and cannot be recreated from a backup if they were never part of the saved data. Unreviewed bank feeds reflect real-time information that may change over time, thus they are not included in static backups since they are often considered working data that is subject to user confirmation and adjustment.

The other groupings contain elements like recurring transactions, which are set up based on specific user input and are generally restored effectively, or attachments and inventory counts, which can be backed up properly. Thus, distinguishing these types of data through the correct choice helps clarify the limitations of the backup and restore functionality.