Which IBM Tivoli Storage Manager (TSM) backup client version(s) are supported for backup and restore

Which IBM Tivoli Storage Manager (TSM) backup client version(s) are supported for backup and
restore to a TSM V6.3 Server?

A.
OnlyV6.3

B.
V5.4 and later

C.
Only V6.2 and V6.3

D.
V6.1, V6.2, andV6.3