在下列间隙感染中，哪一个最常引起颌骨边缘性骨髓炎()

A．颞间隙

B．咬肌间隙

C．颌下间隙

D．颏下间隙

E．眶下间隙

Rebaselining may be required in cost control when ______ .

A) CVs are severe, and a realistic measure of performance is needed
B) revised cost estimates are prepared and distributed to stakeholders
C) corrective action must be taken to bring expected future performance in line with the project plan
D) EAC shows that additional funds are needed to complete the project even if a scope change is not needed