Full backups of a file server are performed daily over a LAN but are causing network degradation. 33 percent of the server’s data changes each day, and it is always different files that change. Which set of backup levels will achieve the largest reduction in backup data during a period of one month?

A.
A monthly full backup followed by daily incrementals

B.
A monthly full backup followed by daily differentials

C.
A weekly full backup followed by daily incrementals

D.
A weekly full backup followed by daily differentials