信管网章节习题

Three months into a project, the project manager learns that the project has a CPI of 1.1 and a SPI of 0.84. Three months later the CPI and SPI have changed to 0.9 and 1.0, respectively.In the three month interval, what course of action was likely taken by the project manager?
A、Reduced project scope
B、Authorized contingency plan
C、Increased resources
D、Reduced resources