What account posting rules are applied to customer payments?

The correct account posting rules for customer payments involve debiting cash and crediting receivables. When a customer makes a payment, it represents an increase in cash for the business; hence, cash is debited. Simultaneously, the amount owed by the customer, recorded as receivables, decreases, necessitating a credit to the receivables account.

This accounting entry illustrates the dual effect of the transaction on the accounting equation: increasing assets (cash) while simultaneously decreasing another asset (receivables). The other options do not accurately reflect the nature of a customer payment transaction, as they either mix up account types or inaccurately represent the flow of the transaction with respect to cash and receivables.