上述关于执行脑死亡标准的伦理意义的提法中，最具有说服力的是（）

A.有利于科学地确定死亡，真正维护人的生命

B.有利于医生对病人积极抢救还是放弃治疗进行正确抉择

C.有利于节约医疗卫生资源

D.有利于公正分配医疗卫生资源

E.有利于器官移植的开展

As part of monitoring and controlling, project performance must be monitored and measured regularly to identify variances from the plan. All the following are processes involved with controlling EXCEPT （）.

A．verify scope

B．risk monitoring and control

C．performance reporting

D．quality assurance