Which of the curve $(Z v s p)$ will be followed by a real gas?

$\because Z=\frac{p V}{n R T}$ where, $ Z=\text { compressibility factor }, p=\text { pressure }$ $V=\text { volume, } n=\text { number of moles }$ $R=\text { gas constant }, T=\text { temperature, }$ Also, curves for $(Z v s p)$ (i) If $Z>1$ the gas show positive deviation from ideal behaviour and is less compressible. (ii) If $Z < 1$, gas show negative deviation. (iii) No, real gas give a straight line parallel to $(p)$. Hence, path way (2) and (3) only is the correct answer.