An administrator is migrating queue managers on both AIX and Solaris platforms from WebSphere
MQ V5.3 to V70.
Which approach is the fastest to successfully migrate the queue managers?

A.
Install V7.0 on AIX
Install V7.0 on Solaris

B.
Install V7.0 on AIX
Uninstall V5.3 then install V7.0 on Solaris

C.
Uninstall V5.3 then install V7.0 on AIX
Install V7.0 on Solaris

D.
Uninstall V 5.3 on both AIX and Solaris
Install V7.0 on both AIX and Solaris