A Treasury bond due in one year has a yield of 2.2%; a Treasury bond due in 5 years has a yield of 3.6%. A bond issued by BHP due in 5 years has a yield of 4.1%; a bond issued by the Commonwealth Bank due in one year has a yield of 2.5%. The default risk premiums on the bonds issued by the Commonweath Bank and BHP, respectively, are:

2.5%; 1.6%

0.3%; 1.9%

1.1%; 0.5%

0.3%; 0.2%

0.3%; 0.5%