Suppose that the current one-year rate (one-year spot rate) and expected one-year T-bill rates over the following three years (i.e., years 2, 3, and 4, respectively) are as follows: 1 1 R Er Er Er   6%, ( ) %, ( ) . %, ( ) . % 2 1 7 3 1 7 5 4 1 7 85 Using the unbiased expectations theory, calculate the current (long-term) rates for one-, two-, three-, and four-yearmaturity Treasury securities. Plot the resulting yield curve. ( LG 2-7 )