You are working on a 12 month assignment to build a website with 4000 pages for $ BAC. You are supposed to spend $ PV every 3 months. After 6 months, you determine that only $ EV of work is completed and cost incurred is $ AC. What is the ETC?

 
 1     BAC - EV
 
 2     BAC/CPI
 
 3     BAC-EV/CPI
 
 4     BAC-EV/(CPI * SPI)