Forecasting Interest Rates On May 23, 20XX, the existing or current (spot) one-year, two-year, three-year, and four-year zero-coupon Treasury security rates were as follows: _1R_1 = 6.10%. _1R_2 = 6.60%. _1R_3 = 7.10%. _1R_4 = 7.30% Using the unbiased expectations theory, what is the one-year forward rate on zero-coupon Treasury bonds for year four as of May 23, 20XX 7.30% 24.93% 6.775% 7.90%