Assuming the expression for the pressure exerted by the gas on the walls of the container, it can be shown that pressure is
A. `[(1)/(3)]^(rd)` kinetic energy per unit volume of a gas
B. `[(2)/(3)]^(rd)` kinetic energy per unit volume of a gas
C. `[(3)/(4)]^(th)` kinetic energy per unit volume of a gas
D. `(3)/(2)xx` kinetic energy per unit volume of a gas