What might you infer about the theme of Hiroshima from the following passage?

They still wonder why they lived when so many others died. Each of them counts many small items of chance or volition—a step taken in time, a decision to go indoors, catching one streetcar instead of the next—that spared him.

A. The theme deals with the significance of the choices human beings make in determining the paths their lives will take.
B. The theme deals with the idea that people are safe only inside their homes.
C. The theme deals with the cruel and random destruction caused by the bomb.
D. The theme deals with the different ways in which people handle tragedy.