6.15. Complete the following input/output report. What is the actual backlog at the end of period 5? Period 2 4 LA Total Planned Input 78 78 78 78 78 Actual Input 84 80 78 82 Cumulative Variance Planned Output 80 80 80 80 80 Actual Output 85 83 76 82 84 Cumulative Variance Planned Backlog 45 Actual Backlog 45