Jan Ashley worked for the R&S Department Store as a sales associate in the fine linens department. As she would give change back to a customer for cash sales, she would also pull out a $10 bill and slip it in her pocket. She concealed her scheme by issuing one false refund at the end of her shift for the total amount she stole that day. This is an example of what type of scheme?

a) Sales skimming
b) Larceny at the point of sale
c) Lapping
d) Larceny at the deposit