The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a rectangular notch is given by

• A. <img src="/_files/images/mechanical-engineering/hydraulics-and-fluid-mechanics/166-201-1.png">
• B. <img src="/_files/images/mechanical-engineering/hydraulics-and-fluid-mechanics/166-201-2.png">
• C. <img src="/_files/images/mechanical-engineering/hydraulics-and-fluid-mechanics/166-201-3.png">
• D. <img src="/_files/images/mechanical-engineering/hydraulics-and-fluid-mechanics/166-201-4.png">