The Data Backup Window Has Expanded into the Morning Hours

The data backup window has expanded into the morning hours and has begun to affect production users. The main bottleneck in the process is the time it takes to replicate the backups to separate severs at the offsite data center. Which of the following uses of deduplication could be implemented to reduce the backup window?

A) Implement deduplication at the network level between the two locations
B) Implement deduplication on the storage array to reduce the amount of drive space needed
C) Implement deduplication on the server storage to reduce the data backed up
D) Implement deduplication on both the local and remote servers