The pressure p of a gas is plotted against its absolute temperature T for two different constant volumes, $V_1$ and $V_2$. When $V_1>V2$ , the

I. The intercept on the y-axis leads to a value of unity.
II. The intercept on the y-axis leads to a value of 'n'.
III. The curves posses the same slope for different gases at the same temperature.
IV. The curves posses different slope for different gases at the same temperature.
V. The curves posses the same slope for gas at different temperatures.