Assume you are the project manager and based on your customer's requirements you have determined there are four main tasks in a Dream Backyard project. Each phase has been assigned a TBC. Specifically, the customer wants a pool and spa built (Task 1$50,000 ); all plumbing, electrical, and mechanical installed (Task 2 - $20,000 ); a pool deck with planters and a raised fire pit (Task 3 - $15,000 ); and landscaping and clean up (Task 4 $5,000 ). You estimate this will take 5 weeks to complete. The costs are budgeted as follows: What is the total cumulative TBC? What is TBC at the end of week 4