Select the correct statement from the following:
1
The canal flows below the drain in aqueduct and syphon aqueduct, and the canal flows above the drain in super passage and syphon.
2
The drain flows below the canal in aqueduct and syphon aqueduct, and the drain flows above the canal in super passage and syphon.
3
It is engineer's choise to let the drain flow above or below the canal in aqueduct and syphon aqueduct and also in super passage and syphon.
4
The above statements are wrong