Ahh ... on weekends we need to input a PIN code on top of scanning . Well , let 's input the PIN ... Normally when I do this , I can hear the doors unlocking immediately . This time there was no response .
According to the above context, choose the best option to answer the following question.
Question: What was the reason we could not get in the building ?
Options:
A. There was a quick response to the PIN
B. None of the above choices .
C. The scanner responded to the PIN
D. The scanner was working .


B