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: Why do they need to input a PIN code ?
Options:
A. They need to input the code because it 's the weekend .
B. None of the above choices .
C. They need to input the code because it 's Wednesday .
D. They need to input the code because it 's Tuesday .


A