Two identical tanks contain the same liquid to the same height. Tank A has a small circular orifice of area A0 on the vertical side wall at depth h, while tank B has a square orifice of the same area A0 at the same depth. Neglecting viscosity, which one of the following statements is correct?
a) The efflux speed is greater for tank A because its circular opening offers smoother flow.
b) Both tanks have the same efflux speed, but the volume flow rate is greater for tank A due to a higher discharge coefficient of a circular orifice.
c) Both the efflux speed and the volume flow rate are identical for the two tanks.
d) The efflux speed is greater for tank B because the corners of the square opening concentrate the pressure and accelerate the jet.