Question 4 (20 points) The inflation premium is 2.5% per year, the liquidity premium is 0.3% per year, the maturity premium is 1.1% per year, and the default premium is 0.7% per year. If the risk-free interest rate is 4.3% per year, what is the annual real interest rate? 1) 2.1% 2) 2.2% 3) 1.9% 4) 2.0% 5) 1.8%