Which of the following statements is CORRECT?

Answer choices:

A bond spread is often calculated as the difference between a corporate bonds yield and a Treasury securitys yield of the same maturity. Therefore: spread = default risk premium.

Inflation premium is expected to be zero.

The maturity risk premium is either zero or positive.

An upward-sloping yield curve implies that future short-term rates are expected to decline.

In equilibrium, long-term rates must be equal to short-term rates in a yield curve.