If $\mathrm{K}_{\mathrm{C}}$ for the equilibrium reaction $2 \mathrm{ABC}(g) \rightleftharpoons 2 \mathrm{AB}(g)+\mathrm{C}_2(g)$ is X at $\mathrm{T}(\mathrm{K})$, its $\mathrm{K}_{\mathrm{P}}$ at the same temperature is :

• A

  X.T
• Correct answer
  B

  X(RT)
• C

  $\left(\frac{\mathrm{X}}{\mathrm{T}}\right) \mathrm{R}$
• D

  $\frac{\mathrm{XT}}{\mathrm{R}}$

Hence, the correct answer is option: 'B'.