Problem:
Assume that 4-year Treasury Bonds currently have a nominal yield of 6.2%, and a 4-year Corporate Bonds have a nominal yield of 8.5%. If Maturity Risk Premium (MRP) on all 4-year contracts currently is 1.3%, and Corporate Bonds currently have additional 0.4% Liquidity Risk Premium (LRP) (whereas Treasury Bonds do not have Liquidity Risk Premium),
Required:
Question: What is the current Default Risk Premium (DRP) on the Corporate Bonds?
Note: Give you opinion citing relevant ethical principles.