The intake opening is generally covered by a screen to prevent entry of debris etc. and its level is kept

at the level of water of the source

at the bottom of water of the source

at about 2.5 m above the bottom

The intake opening is generally covered by a screen to prevent entry o

1.	The intake opening is generally covered by a screen to prevent entry of debris etc. and its level is kept
A.	at the level of water of the source
B.	at the bottom of water of the source
C.	at about 2.5 m above the bottom
D.	none of these.
Answer» D. none of these.