3. (TCO C) A project to remodel an office area has the following activities. (Hint: You will need to build an AIB/AON diagram, perform a forward pass, and perform a backward pass to answer this question.)ActivityDurationPredecessorsA4 months—B3 months—C3 months—D5 monthsCE3 monthsA, BF3 monthsB, CG3 monthsE, FH4 monthsD, FI5 monthsGJ2 monthsHa) What are the critical path activities?b) What is the project’s scheduled completion time?c) What is the slack or float for Activity C? Show your calculations.d) What is the slack or float for Activity D? Show your calculations.e) What is the slack or float for Activity F? Show your calculations.f) What is the slack or float for Activity G? Show your calculations. (Points : 30)