Given a BCWP of $$73,000,$ an ACWP of $$100,000,$ a BAC of $$200,000,$ and a BCWS of $$73,000.$ Calculate the schedule performance index $($SPI$)$ and identify if the project is ahead of schedule, on schedule or behind schedule

A$)1-$ This project is on schedule

B$)0\mathrm{.}73-$ This project is behind schedule

C$)$ $$146,000-$ This project is ahead of schedule

D$)$ None of the above