以下措施肯定可以提高全口义齿固位和稳定、除了（）

A.尽量扩大基托面积

B.准确的印模

C.有利的磨光面形态

D.合理的排牙

E.指导患者正确使用义齿

You have recently taken over a new project when the previous project manager resigned. While studying the project information, you find out that cost variances are very severe. To provide a realistic basis for performance measurement, you should recommend （）.

A．issuing budget updates

B．revising the cost baseline

C．corrective action adjusting schedule activity budgets

D．closing the project