After an extended outage of the primary site, a large number of invalid tracks have accumulated
on the R2 devices. What can be done to minimize application response time impact when
resuming production on the R1 devices?

A.
Run an R1 update followed by a failback

B.
Invalidate the tracks on R1, write-disable R1, and refresh R1

C.
Run a restore command

D.
Write-disable R2 and merge the track tables