8. (5 points) Consider the following task summary - At the beginning, we start by working on requirements modeling and producing the requirements specification, which will take 4 weeks. - When the requirements specification is ready, we start working on three tasks concurrently: 1. building the high-level design in 2 weeks to produce the technical specification, 2. developing the acceptance criteria in one week, 3. and generating system test plan in one week. - When the technical specification is ready, we move into the low-level design to get the module specifications. This takes 2 weeks. Meanwhile, the integration test plan is generated in one week. - When the module specifications are ready, we work on two activities concurrently: 1. developing modules. This takes 6 weeks. 2. and producing the module test plan in 2 weeks. - When the developed modules and the module test plan are ready, we perform module testing in 3 weeks. - When both the tested modules and the integration test plan are ready, we integrate and test our system in 4 weeks. - When both the integrated system and the system test plan are available, we perform system testing, which will take 2 weeks. - When the tested system and the acceptance criteria are ready, we work on customer acceptance in 2 weeks to arrive at an accepted system. a. Draw a Gantt chart of the work breakdown structure illustrated by the task summary above and show the slack time of each task (if there are any). b. Draw a detailed network diagram (or PERT/CPM chart) showing the critical path using the information of the task summary above