Consider the following statements :1. A dummy activity is artificially introduced in a network when necessary.2. A dummy activity consumes some time.3. A dummy activity is represented by a dotted arrow.4. A dummy activity must necessarily be introduced in every network. Which of the above statements are correct ?

Consider the following statements :1. A dummy activity is artificially

1.	Consider the following statements :1. A dummy activity is artificially introduced in a network when necessary.2. A dummy activity consumes some time.3. A dummy activity is represented by a dotted arrow.4. A dummy activity must necessarily be introduced in every network. Which of the above statements are correct ?
A.	1, 2 and 3
B.	1 and 3
C.	2, 3 and 4
D.	1 and 2
Answer» C. 2, 3 and 4

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