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4. [2pts] You are given the following prices of 1000 par value bonds with 10% annual coupons: The price of a 3-year bond is 1030 , the price of a 4-year bond is 1035 , and the price of a 5-year bond is 1037 . The 3-year spot rate is 8% and the 6-year spot rate is 7%. Find (a) The 4-year spot rate. (b) The 5-year spot rate. (c) Price of a 6-year bond