【单选题】

Which of the following is reasonable in explaining the integration
A．Integration is making choices about where to concentrate resource So sacrifice is inevitabl

B．Since the project managements are implemented by overlapping and iteratively, integration is neccessar
C．“Trade-off” means “give and take”. It is necessary in dealing with various stakeholder
D．The project deliverables are not integrated with ongoing operations of the customer's organizatio