2. Consider the following project in AoN format: (the number above the node is activity duration, and below the node is resource reauirementl Using the priority list , construct a heuristic solution for this RCPSP by employing: a) Forward planning with the serial scheduling scheme; b) Forward planning with the parallel scheduling scheme; a) Backward planning with the serial scheduling scheme; b) Backward planning with the parallel scheduling scheme; Requirement: The schedule should be constructed step by step, give the corresponding activity set and partial schedule (drawing the pictures by visio) of each step