Hi Guys, need help with this question:

One way the Close Project or Phase process differs from Close Procurement is:

A)Procurement closure involves verification that all work and deliverables are acceptable, where Close Project
or Phase does not

B)Close Project or Phase is only a subset of Close Procurement

C)Procurement closure means verifying that the project is complete or terminated; Close Project or
Phase is the process of tying up all of the activities for every management process group

D)Procurement closure is performed by the seller, Close Project or Phase is performed by the buyer

Which one is the right answer? and some explanation would help.

Thank you for your time.