What should the installation planner consider when upgrading an IBM Tivoli Storage Manager (TSM)
client to V6.3?

A.
install both the server and client at the same time

B.
upgrade the client to V6.3 before upgrading the server to V6.3

C.
verify the new client level is supported by the current server level

D.
upgrade the TSM Server first to V6.3 before upgrading the TSM client