Debt-service payments are the sum of the following:

A) Dividend payments + Equity buybacks.

B) Preferred dividend payments + common-equity dividend payments.

C) Principal payments on debt + Interest payments on the same debt.

D) Interest payments on convertible debt + Preferred dividend payments.

The risk-free rate is the rate of interest on government security having no _________.

A) Default risk

B) Inflation risk

C) Interest rate risk

D) Exposure to any risk