What is the most likely planning anti-pattern causing this sudden impediment?

During Program Increment (PI) Planning, a scrum of scrums occurs just before the draft plan review. The Scrum Master from one team raises an issue that one of the Product Managers just showed up to the planning area with a priority wish list of items. These items do not align with the Feature prioritization.

What is the most likely planning anti-pattern causing this sudden impediment?
A . There is strong alignment between business and marketing
B. Planning decisions have been centralized
C. Prioritization by Product Management was performed autonomously not collaboratively
D. There is no social network that Solution development relies on

Answer: C