The Best Way to Measure the Default Risk Premium That

The best way to measure the default risk premium that a borrower is paying is to

A) look at the borrower's bond rating as reported by Moody's Investors Services.
B) look at the borrower's bond rating as reported by Standard and Poor's Bond Rating Services.
C) compare the interest rate the borrower pays with the risk-free premium, usually represented by the rate on US Treasury Securities.
D) look at the profitability of the lender relative to its industry.