The Equilibrium Constants (Expressed in Atm) for the Chemical Reaction

Multiple Choice

The equilibrium constants (expressed in atm) for the chemical reaction N₂(g) + O₂(g) 2NO(g) are K_P = 1.1 × 10^-3 and 3.6 × 10^-3 at 2200 K and 2500 K, respectively.
Which statement is true?

A) The reaction is exothermic, ΔHº < 0.
B) The partial pressure of NO(g) is less at 2200 K than at 2500 K.
C) K_p is less than K_c by a factor of (RT) .
D) The total pressure at 2200 K is the same as at 2500 K.
E) Higher total pressure shifts the equilibrium to the left.