ACMP emphasizes that when project and change managers collaborate for the first time, thefirst step is clarifying roles and responsibilities. This ensures alignment, avoids duplication, and sets expectations for collaboration. Stakeholder analysis (C) and monitoring tools (D) are important but premature without clarity on responsibilities. Sending a newsletter (A) adds no strategic value. Option B best aligns with ACMP’s guidance on establishing effective partnership between project and change managers.

(Reference: ACMP Standard, Process Group 1 – Evaluate; Activity: Clarify roles and responsibilities to align change and project management efforts.)