A construction project has an SPI of 1.05 and a CPI of 0.96. Based on this information, which of the following statements is most likely to be true?
A. The project manager misjudged the local labor market and was not able to hire enough workers, and some machinery broke down requiring expensive repairs.
B. The project manager was able to find a new vendor who supplied materials for less than the original estimates, and process improvements helped shorten the schedule.
C. The project manager failed to manager stakeholders effectively, and community protests delayed the project, causing the project to consume fewer resources.
D. A subcontractor finished some tasks more quickly than estimated, and the project had to pay more for materials than originally estimated.
Answer: D