*$_The formula which accepts the value of rugosity coefficient n = 0.012 to be used in Manning‚Äö√Ñ√¥s formula, is given by?

*$_The formula which accepts the value of rugosity coefficient n = 0.0

1.	*$_The formula which accepts the value of rugosity coefficient n = 0.012 to be used in Manning‚Äö√Ñ√¥s formula, is given by?
A.	Bazin
B.	Crimp and Bruges
C.	William-Hazen
D.	Kutter
Answer» C. William-Hazen