The specific speed of a turbine is given by the equation

• A. <img src="/_files/images/mechanical-engineering/hydraulic-machines/197-76-1.png">
• B. <img src="/_files/images/mechanical-engineering/hydraulic-machines/197-76-2.png">
• C. <img src="/_files/images/mechanical-engineering/hydraulic-machines/197-76-3.png">
• D. <img src="/_files/images/mechanical-engineering/hydraulic-machines/197-76-4.png">