#3) Consider the following project network and the given data. a) (15 points) For the ES case and costs being incurred upon finishing of an activity, calculate the accounting variance, the schedule performance index (SPI), the cost performance index (CPI), the expected performance index (EPI) to evaluate the project at the end of day 15 and give interpretations with regard to the status of the project using these indexes. b) (10 points) Update the expected completion time and budget at completion assuming future work will progress at the originally planned rates. c) (10 points) Solve the part (a) for the case of costs being incurred uniformly over an activity and compare with the results of part (a)