While conducting a brainstorming session to identify stakeholders, a process manager disagrees with you on a decision you have made regarding the influence and impact of each stakeholder on the project. He even makes some comments against you in front of other stakeholders. As a senior project manager what should be your immediate response?

A. Do nothing in the meeting but later escalate this issue to the sponsor B. Take the help of other stakeholders and present your argument C. Propose an immediate meeting between the two of you to resolve the differences D. Remove the process manager from the project