Question

In the network shown below the critical path is along                        

(a) 1 – 2 – 3- 4 – 8 – 9

(b) 1 – 2 – 3 - 5 – 6 – 7 – 8 – 9

(c) 1 – 2 – 3 – 4 – 7 – 8 – 9

(d) 1 – 2 – 5 – 6 – 7 – 8 – 9