Which backup strategy satisfies the requirements?

Examine the backup requirement for your company:

1) Every Sunday, a backup of all used data file blocks is performed.
2) Every Wednesday and Friday, a backup of all the changed blocks since last Sunday’s backup is performed.
3) On all the other days, a backup of only the changed blocks since the last day’s backup is performed.

Which backup strategy satisfies the requirements?

A.
level 0 backup on Sunday, cumulative incremental backup on Wednesday and Friday, and
differential incremental level 1 backup on all the other days

B.
level 0 backup on Sunday, differential incremental backup on Wednesday and Friday, and cumulative incremental level 1 backup on all the other days

C.
full database backup on Sunday, level 0 backup on Wednesday and Friday, and cumulative incremental level 1 backup on all the other days

D.
full database backup on Sunday, level 0 backup on Wednesday and Friday, and differential incremental level 1 backup on all the other days