Which of the following statement is/are correct?1) An activity is in between two node numbers, which need not be in an increasing order in the activity progress sequence.2) The length of the arrow in a network has certain significance.3) Concurrent activities are mutually independent and can possibly be taken up simultaneously.

Which of the following statement is/are correct?1) An activity is in b

1.	Which of the following statement is/are correct?1) An activity is in between two node numbers, which need not be in an increasing order in the activity progress sequence.2) The length of the arrow in a network has certain significance.3) Concurrent activities are mutually independent and can possibly be taken up simultaneously.
A.	1 only
B.	3 only
C.	2 only
D.	1, 2 and 3
Answer» C. 2 only