How can the man-agement team help ensure they complete the Feature within the PI?

During the management review and problem-solving meeting, one team raises the risk of not finishing a Feature before the end of the Program Increment (PI).

How can the man-agement team help ensure they complete the Feature within the PI?
A . Use buffer resources as a guard band
B. Redefine the definition of done for Features
C. ROAM the risk appropriately
D. Negotiate a reduction in scope of the Feature

Answer: D