Only answer if you're certain and show your work, please.

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	IMMEDIATE PREDECESSOR	TIME (WEEKS)
A		4
B	A	3
C	A	5
D	A	5
E	B	7
F	C D	6
G	D F	3
H	D	2
I	E G H	2

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-I
	A-B-E-I
	A-D-H-I
	A-D-F-G-I

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.)

	B
	C
	D
	G
	E
	F

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.)

	A-C-F-G-I
	A-B-E-I
	A-D-H-I
	A-D-F-G-I

d-2. What is the earliest completion time for the new critical path?

Completion time weeks