Question 22N.1A.SL.TZ0.10

Three statements about Boltzmann’s constant k_B are:

I.   k_B has a unit of J K⁻¹

II.  k_B $=\frac{\text{gas constant}}{\text{Avogadro's constant}}$

III. k_B $=\frac{\text{the average kinetic energy of particles}}{\text{temperature of the gas}}$

Which statements are correct?

A.  I and II only

B.  I and III only

C.  II and III only

D.  I, II and III