The correctly represented equation for Critical V,T and P relationship is

• A

  $3{\mathrm{V}}_{\mathrm{c}}=\mathrm{b}+\frac{{\mathrm{RT}}_{\mathrm{c}}}{{\mathrm{P}}_{\mathrm{c}}}$

• B

  ${\mathrm{V}}_{\mathrm{c}}=\mathrm{b}+\frac{{\mathrm{RT}}_{\mathrm{c}}}{{\mathrm{P}}_{\mathrm{c}}}$

• C

  $3{\mathrm{V}}_{\mathrm{c}}=\frac{{\mathrm{RT}}_{\mathrm{c}}}{{\mathrm{P}}_{\mathrm{c}}}$

• D

  $3{\mathrm{V}}_{\mathrm{c}}=\mathrm{b}+\frac{{\mathrm{T}}_{\mathrm{c}}}{{\mathrm{P}}_{\mathrm{c}}}$