Answer:
d. 0.8% and 1.3%.
Step-by-step explanation:
The default risk premiums on the bonds issued by Shell = 6.5% - 5.7% = 0.8%
The default risk premiums on the bonds issued by Ford = 7.5% - 6.2% = 1.3%
Hence, the default risk premium issued by Shell and Ford respectively are 0.8% and 1.3%