(3) ABC Tech has been contracted to install a software system for a client company. Relevant data for the project which consists of activities A, B, ..., H are given in the table below. The project network which includes calculations of earliest start, latest start, earliest finish, and latest finish follows the table. Activity Immediate Predecessors None Crash Time (days) 7 Normal Cost Normal Time (days) 7 9 Crash Cost A 7 B A 14 10 3 2 D E B, C D $1,500 $1,000 $600 $400 $1,000 $300 $1,000 $500 $1,500 $1,700 $1,200 $650 $1,400 $400 $1,120 $500 2 1 F E 7 5 6 G E 8 H F G 4 4 The figure below displays the network representation of the project. 7116 2633 B(9) F(7) 12/21 27|34 017 21124 24/26 A(7) E(2) 2124 24/26 7121 2634 C(14) G(8) 7/21 2634 D(3) 017 3438 H(4) 3438 a) [2 points] What is the critical path? ACDEGH ACDEFH ABDEFH ABDEGH b) [1 points] What is the project completion time (duration of the critical path)? c) (2 points] What is the total cost of the project with normal costs? (DO NOT USE COMMA IN NUMBER) $ d) [3 points] Which activity should be crashed to reduce project completion time by 1 day at minimum cost? G OF CB D e) (3 points] What is the incremental cost in part d)? f) [2 points) Which activity or activities should be crashed to reduce project completion time by one more day? F and G CD B and C g) [2 points) What is the incremental cost in part f)