There is a room full of vending machines . I had a 20 dollar bill and I wanted a Coke Zero . In a quiet hour , I walked down to the emergency department and asked the clerk if there was a cashier anywhere who took payments at night , so I could get change . He sent me to the security desk , staffed by a VA police officer who told me that there was no cashier anywhere , and no change machine he could think of .
Why could n't the narrator use the vending machine ?
A. The machine was out of order .
B. The machine stole the narrator 's money .
C. They could n't break the large bill .
D. None of the above choices .


C