You are developing a performance progress report for a project you are managing. The following time-phased budget was developed earlier in the planning stage and is being used as the standard against which the project performance is measured. Work Packages A B C Total W1 W2 W3 W4 W5 W6 3 9 10 6 8 5 3 9 10 6 8 5 You are analyzing the project performance at the end of Week 5. Activity "C" is 80% complete and its actual cost is 15. What is the schedule variance of this activity? Use two decimal places in your calculations.