Under which condition must cash transactions over $10,000 be reported?

The correct answer is based on the requirements established by the Bank Secrecy Act (BSA), which mandates that cash transactions exceeding $10,000 must be reported. This reporting is necessary when the cash is received in the ordinary course of business, as it helps to prevent money laundering and other financial crimes. By ensuring that transactions of this size are reported, regulatory authorities can track potentially illicit activities and verify that the funds being exchanged are coming from legitimate sources.

In contrast, while transactions from regular customers, out-of-state buyers, or those involving multiple payments may involve significant amounts of cash, they do not automatically necessitate reporting unless the cash transaction reaches the $10,000 threshold. Therefore, the requirement specifically relates to the amount involved in the transaction during normal business operations.