A. [15 Pts.] Make a clear and neat sketch of the network specified below usingprecedence notation. ΠΟB. [15 Pts.] On the precedence diagram, calculate and show the early start (EST), earlyfinish (EFT), late start (LST), late finish (LFT), and TF in each activity. Startcalculations with day zero 0. Show the critical paths with colored pencil.