The R&D Project: There is an R&D project at a high-tech company to be managed by Joanna. She is now under pressure from the companys rivals to complete the project early with minimum cost. She has gathered the following information for project crashing. You will need to use such information to construct an AoA network.

Activity	(i, j)or i->j	Activity Time (days)		Activity Cost ($1000s)		Total Allowable Crash time	Marginal Crash Cost ($1000s)
		Normal	Crash	Normal	Crash
A	(1,2)	6	4	200	240	2	20
B	(2,3)	8	5	500	605	3	35
C	(2,4)	2	1	570	650	1	80
D	(3,5)	4	1	840	960	3	40
E	(4,5)	7	6	355	400	1	45
F	(5,6)	3	1	400	420	2	10
G	(5,7)	5	2	710	800	3	30
Dummy 1	(3,4)
Dummy 2	(6,7)

Question 13

Under Normal time, the latest start (LS) time of activity F is:

Select one:

a. 25

b. 24

c. 26

d. 23