Which of the following examples from the story is the strongest example of situational irony?

a. The colonel and the captain can't decide to let Collins get the water.

b. In the midst of the battle an officer screams an order so loudly that it comes out as a shriek.

c. The soldiers' roar of laughter greets Collins on his return.

d. Collins returns to give the dying lieutenant a drink of water but spills the water all over the lieutenant's face.