A customer wants to schedule a backup job that compares and saves changes from the last full backup. Which of the following backup types should be used?

A differential backup copies all data that has changed since the last full backup. This method ensures that a full restoration only requires the most recent full backup and the latest differential backup, simplifying the recovery process.

A full backup copies all selected data regardless of any previous backups, which is not what the customer requested.

A clone creates an identical, independent copy of a disk or system at a point in time, which is distinct from a backup strategy based on comparing changes.

An incremental backup saves only the data that has changed since the last backup of any type (full or incremental), requiring all backups in the chain for restoration.