Water stands at a depth H in a tank whose side walls are vertical. A hole is made in one of the walls at a height h below the water surface. The stream of water emerging from the hole strikes the floor at a distance R from the tank, where R is given by

Options

A. `R=sqrt(h(H-h))`
B. `R=sqrt(h(H+h))`
C. `R=2sqrt(h(H-h))`
D. `R=2sqrt(h(H+h))`