The initial difference between liquid levels of two identical cylindrical vessels having their area of cross-section A, is H. Flow time T from one vessel to another through an orifice having coefficient of discharge Cd and area a will be

• A. <img src="/_files/images/civil-engineering/hydraulics/151-7.133-1.png">
• B. <img src="/_files/images/civil-engineering/hydraulics/151-7.133-2.png">
• C. <img src="/_files/images/civil-engineering/hydraulics/151-7.133-3.png">
• D. <img src="/_files/images/civil-engineering/hydraulics/151-7.133-4.png">