For designing the venturi head,

[A].	width of the throat should not be less than one-third of the bed width of main canal
[B].	width of the throat should not be less than the width obtained from the formula B = Q / 1.2d3/2, where d is the difference in levels of F.S.L. and sill
[C].	minimum throat width should not be less than 60 cm
[D].	length of the throat should be 2.5 times the depth measured to F.S.L. in the main canal
[E].	all the above.

Answer: Option E

Explanation:

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