A $25mm$ siphon $)$ is $20m$ long and is used to draw water from a tank and dicharge it into the air as shown in $($Click on the diagram:

$.$ The discharge in the siphon is $7\mathrm{.}5\frac{l}{s}$ while the length of the siphon from the intake point to the summit $($S$)$ is only one$-$quarter of the total length. If all minor losses are neglected, what do you think is the approximate pressure at the summit of the siphon? Select ONE.

A SIPHON DRAWING WATER FROM A TANK