Which of the Following Results in a Decrease in the Entropy

Which of the following results in a decrease in the entropy of the system?

A) O₂(g) , 300 K $\rightarrow$ O₂(g) , 400 K
B) H₂O(s) , 0 $\degree$ C $\rightarrow$ H₂O(l) , 0 $\degree$ C
C) N₂(g) , 25 $\degree$ C $\rightarrow$ N₂(aq) , 25 $\degree$ C
D) NH₃(l) , -34.5 $\degree$ C $\rightarrow$ NH₃(g) , -34.5 $\degree$ C
E) 2H₂O₂(g) $\rightarrow$ 2H₂O(g) + O₂(g)