Match the types of bonds to their descriptions.

1. Bonds issued by national governments.
2. Bonds with a yield to maturity (YTM) lower than their coupon rates.
3. Bonds with a high likelihood of default.
4. Short-term bonds issued by the U.S. government. select w 1. Sovereign bond select w 2. Treasury bills select " 3. High yield bonds select ~ 4. Premium bonds.