Which was the first release of IBM i to support Multipath I/O (MPIO) at the client LPAR level, when

Which was the first release of IBM i to support Multipath I/O (MPIO) at the client LPAR level,
when the same storage is served from redundant VIO Servers?

A.
6.1.0

B.
6.1.1

C.
7.1.0

D.
7.1.1