进行敏感性分析时，必须由分析者主观判断而定的是

A．拟分析的变量

B．变量变化的范围

C．研究结果的应用价值

D．研究结果是否真实可靠

E．研究结果的实用性

A project manager believes that modifying the project scope may provide added value for the customer. What should the project manager do

A．Change the scope baselin

B．Contact the customer to determine if the change adds valu

C．Call a meeting of the change control boar

D．Change the project's objective