The university IT team is working on the implementation of a new software system for enrollment. Using the following table, complete the requested tasks:
					Time in days	Costs
	Activity	Immediate Predecessor	Normal	Crash	Normal	Crash
	A	-	6	5	$900	$1,000
	B	A	8	6	$300	$400
	C	A	4	3	$500	$600
	D	B	5	3	$900	$1,200
	E	C, D	8	5	$1,000	$1,600
a. Draw the network diagram noting normal and crash times.
b. What is the critical path?
c. What is the minimum cost of crashing the project by 4 days? Would you recommend the team crash the project? Explain your calculations and position.