问题
                    
What information does a control chart provide to a project manager?
                            A:Indicates the need for variance analysis.
B:Illustrates how a process behanves over tim
C:Helps a project manager to change the project scop
D:Identifies the project risks.
                        
                        B:Illustrates how a process behanves over tim
C:Helps a project manager to change the project scop
D:Identifies the project risks.
正确答案是: