The unit discharge (Qu) for a turbine is given by the expression

• A. \({Q_u} = \left( {\frac{Q}{{\sqrt H }}} \right)\)
• B. \({Q_u} = \frac{Q}{{{H^{\frac{3}{2}}}}}\)
• C. \({Q_u} = \frac{Q}{{{H^{\frac{3}{4}}}}}\)
• D. \({Q_u} = \frac{Q}{{{H^{\frac{5}{4}}}}}\)