At a medium$-$scale software development firm, significant modifications to several critical applications employees use daily are on the horizon. Considering the principles of change management, what should the primary focus be during the implementation phase of these changes?

Group of answer choices

Scheduling service restarts during non$-$business hours to minimize application downtime

Ensuring high$-$risk alterations are prioritized and subject to the entire change management process

Updating the block list to encompass previous versions of the applications

Concentrating solely on the allow list while disregarding the block list for a smoother transition