PLS HELP!! No Handwriting!!!

Consider the given information in the following table of activities of the development of Stock Management System of Gulf Hypermarket. Assuming that the project team will work 5 working days in a week and that all tasks will start as soon as possible.

Task	Description	Duration (days)	Predecessors
A	Requirements Analysis	5	--
B	System Design	15	A
C	Programing	25	B
D	Telecoms	15	B
E	Hardware Installation	30	B
F	Integration	10	C, D
G	System Testing	10	E, F
H	Training	5	G
I	Handover Project	5	H

(a). Draw the Activity on Node (AoN) network diagram.

(b). Find the critical path and write that path and its duration.

(c). If the activities D and E are delayed by 10 days, how it will impact on the project completion?