Consider three zero-coupon bonds each with face value of $1,000. The bond maturing in one year is priced at $952.38. The bond maturing in two years is priced at $924.56. The bond maturing in three years is priced at $889.00. a.) What are the spot rates for years 1, 2, and 3, i.e., S1, S2, and s3? b.) What is f1,3?