os You are in charge of a construction project that requires you to build 4 walls in 4 days. The cost of construction for each wall is $1000. The following is the project progress: COST CONTROL EARNED VALUE MANAGEMENT (EVM) ActivityDay Day 2 Day 3 Day 4 Status- End of Day Side 1 Complete, Spent $1000 Side 2 SPF Complete, Spent $1000 50% done, Side 3 Spent $600 Ps...-PF1 Not yet Started Side 4 S Actual Start: F Actual Finish; PS Planned Start: PF Planned Finish Calculate the following and analyze to give interpretation: a. Earned Value (EV) b. Cost Performance Index (CPI) c. Schedule Performance Index (SPI)