In which of the following equilibria will Kc and Kp have the same value ?

In which of the following equilibria will Kc and Kp have the same value ?

A. PCI5 = PCI3 + Cl2
B. N2 + 3H2 = 2NH
C. 2CO + O2 = CO2
D. N2 + O2 = 2NO