Leah Is Surprised to Receive a Second Notice Regarding Her

Leah is surprised to receive a second notice regarding her electric bill.She is sure that she paid it.As a matter of fact,she can picture herself paying the bill through online banking.However,when she goes through her banking records,she cannot find evidence that she paid her electric bill.What likely happened to Leah in this example

A)  She experienced proactive interference. 
B)  She made a source-monitoring error. 
C)  She made a misinformation error. 
D)  She made a reality-monitoring error.