Consider the following AON Network for a small project with only 6 activities. The key resource is a "Backhoe Loader" (BL, see picture below). There are three BL available. Activities A and D require one BL and activities B,C,E and F require two BLs. a. Develop a resource-constrained schedule/loading chart. You may delay the original EF=12 of the project if necessary but keeping all the precedence relationships. Use the parallel method to schedule activities and make sure to include at the bottom two lines showing the number of BLs scheduled and the number of BLs available. b. Draw a new AON Network based on the constrained schedule