Then a month or so later , they suddenly disconnected my server for nonpayment . When I called them up to see WTF was going on , they said my credit card did n't work . Turns out they had done some work in their accounting system , and my MasterCard got reclassified as a Visa .
According to the above context, choose the best option to answer the following question.
Question: What is the reason why my card did n't work ?
Options:
A. Because it got changed to a different company .
B. Because they reclassified it as a MasterCard .
C. Because it was disconnected from the server .
D. Because I did n't pay on time .


A