A Project has a budget of $6000 and a duration of 3 years total. Mary just completed the 12th month of the Project. The project team has completed 50% of the Project work and has spent $2500. What is the Schedule Performance Index (SPI)? A) 1.2 and Behind Schedule B ) 1 and on Schedule C ) 1.2 and Ahead of Schedule D ) 1.5 and Behind Schedule E ) 1.5 and Ahead of Schedule