At Constant Pressure and Temperature, Which of the Following Statements $\rightarrow$

Multiple Choice

At constant pressure and temperature, which of the following statements is true for the reaction:
N₂O₅(s) $\rightarrow$ 2NO₂(g) + ½O₂(g) ,
$\Delta$ H_r = 109.5 kJ.mol^-1 at 298 K.

A) $\Delta$ H is independent of the physical states of the reactants.
B) $\Delta$ H = $\Delta$ U
C) w = 0
D) $\Delta$ H < $\Delta$ U
E) $\Delta$ H > $\Delta$ U