Which reaction will result in a decrease in entropy?
A) Fe₂O₃(s)+3CO(g)→2Fe(s)+3CO₂(g)
B) 2NH₃(g)→N₂(g)+3H₂(g)
C) H₂O(g)→H₂O(I)
D) H₂(g)+I₂(g)→2HI(g)