Task 4: Networking [16 marks] The retailer has seen a shift in the way in which consumers purchase items, such as kitchen appliances. Online retailing now accounts for over 80% of their sales and, to reflect this change, the retailer has decided to convert some of its retail space into warehouse space. This conversion project consists of 10 activities. For example, Activity C takes 3 weeks to complete and can only be started after Activity A has been completed. Information on the 10 activities is outlined in Table 3 below. Precedence Table Activity Preceding Activity Duration (Weeks) A . . .. 5 B . . . . 3 C A A D B 3 E C 5 F C, D 3 G D 6 H . . ... E, F, G 2 H. I Required for Task 4(50 words Max) With reference to the precedence table above, construct a network diagram by going through the: a. Forward and backward. passes [4 +4 = 8marks] b. Identify the critical path and duration of the project. [2+2= 4marks] c. Comment on the difference between critical activities and non-critical activities. [2 +2 =4marks] Note: Draw your network diagram in Excel. The network diagram needs to be copied into your Word file