Pick up the incorrect statement from the following regarding fire hydrants

[A].	Fire hydrants are fitted in water mains at 100 m to 150 m apart at fire
[B].	The minimum water pressure hydrants, is kept 1.5 kg/cm2
[C].	The water at pressure 1 to 1.5 kg/cm2 is made available for 4 to 5 hours for constant use
[D].	None of these.

Answer: Option D

Explanation:

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