Two tanks contain the same height of water and are fitted with identical small orifices at the bottom. Tank P is cylindrical while Tank Q is an inverted right circular cone (vertex downward). Neglecting viscosity, which statement about the time needed to empty each tank is correct?
a) Both tanks take the same time to empty.
b) The relative times cannot be predicted without knowing the base areas.
c) Tank Q empties faster than Tank P.
d) Tank P empties faster than Tank Q.