In Agile practices, the iterative review meeting (or sprint review meeting) is primarily concerned with presenting and discussing the completed deliverables in the iteration, as well as gathering stakeholder feedback on those deliverables. In this case, the workflow inefficiencies raised by the stakeholders are not suitable for discussion and resolution in the review meeting, and this issue can be further discussed in the subsequent review meeting. Project managers should maintain agile processes that focus on demonstrating and reviewing deliverables.
Option B can be done after the review meeting.