Please explain to me how you got your answer. Thanks a bunch.

5 Problem 5-9 (Algo) 14.28 points The R&D department is planning to bid on a large project for the development of a new communication system for commercial planes. The accompanying table shows the activities, times, and sequences required: ACTIVITY Print C D E F G H I IMMEDIATE PREDECESSOR TIME (WEEKS) 2 3 A 5 5 B 3 C D 1 D. F 5 D 4 E. G. H 8 b. What is the critical path? (You may select more than one answer. Single click the box with the question mark to produce a check mark for a correct answer and double click the box with the question mark to empty the box for a wrong answer.) A-C-F-G-1 ? A-B-E-1 A-D-H-1 ? A-D-F-G-1 A-C-FG-1 ? A-B-E-1 A-DH-1 ? A-D-F-G-1 c. Suppose you want to shorten the completion time as much as possible, and you have the option of shortening any or all of B, C, D, and G each one week. Which would you shorten? (You may select more than one answer. Single click the box with the question mark to produce a check mark for a correct answer and double click the box with the question mark to empty the box for a wrong answer.) 2 B 7C ? D G ? E 2 F LC 5 7 D ? G 14.28 points 7 E Print d-1. What is the new critical path? (You may select more than one answer. Single click the box with the question mark to produce a check mark for a correct answer and double click the box with the question mark to empty the box for a wrong answer.) 7 A CFGI 2 A-B-E-4 7 A-D-HI 7 AD-F-G-1 d-2. What is the earliest completion time for the new critical path? Completion time 16 weeks