Which statement is generally true about international wire transfers?

International wire transfers are typically settled through a national Real-Time Gross Settlement (RTGS) system, which is a mechanism used by financial institutions to settle transactions on an individual basis in real-time. This means that the transactions are processed and settled immediately rather than being accumulated and processed as a group at specific intervals, which is characteristic of net settlement systems.

Using RTGS for wire transfers ensures that funds are transferred securely and swiftly, providing finality and reducing credit risk associated with pending transactions. This real-time settlement is crucial for international transfers as they often involve multiple currencies and financial institutions across different jurisdictions, requiring a robust and responsive payment infrastructure.

The other options, while relevant to payment systems in general, do not accurately characterize international wire transfers. For example, wire transfers involve significant amounts of money and thus are not processed through low-value clearing systems. Additionally, international wire transfers are generally irrevocable once sent, meaning that the revocability stated is not applicable.