Suppose that the initial amount of backup data of an application is 500 GB, one full backup job and six incremental backup jobs are performed weekly, the retention period of all backup data is four weeks, and the redundancy percentage is 20%.
In this scenario, how large back-end storage should be ready for the four-week data?
A . 3320 GB
B . 3504 GB
C . 4380 GB
D . 5256 GB
Answer: D