Consider the following statements:
1. Flexibility is the ratio of change of discharge in the distributing channel to the rate of change of the discharge in the outlet.
2. A hyper-proportional outlet is the one in which the flexibility is greater than one.
3. A sub-proportional outlet is the one in which the flexibility is less than one.
Which of the above statements are correct?
1
1 and 2
2
2 and 3
3
1 and 3
4
1, 2 and 3