The critical temperature is the temperature above which a gas cannot be liquified. It is denoted as \\\\(T_c\\\\).\\\\(P_c\\\\) is the Critical pressure, \\\\(V_c\\\\) is the critical molar volume\\\\(V_c = 3b\\\\) (from Ideal gas law)​and \\\\(b = \\dfrac{RT_c}{8p_c}=\\dfrac{R \ imes 400}{8\ imes 41}=\\dfrac{50R}{41}\\\\) \\\\(V_c = 3 \ imes \\dfrac{50R}{41} = \\dfrac{150R}{41}\\\\)Hence, option \\\\(B\\\\) is correct.