What changes occur in the following spreadsheet when you sign a $14,900 contract for excavation? B C D E F H 1 Total 2 Committed 3 Non- and Non 4 Total CommittedCorted Committed 5 Original Chang Estimate Comuted Costs Costs Costs 6 Code Deresption Estimate Onlar (CD) Costs Invoerd laroid T. 7 1100 Superio 5.000 5.000 8 2100 Excavation 15,000 15,000 Enter your answers in the following spreadsheet Cort K Total Estimated Cort Vio Over Completion Under) (1.D (K-E) 5.000 15.000 To Complete 5,000 15.000