You are saving towards purchasing an apartment for $10 million in 6 years and would like to maximize your returns over the period. A Securities Dealer informs you that your best investment choices are a 4-year bond with a spot rate of 10% or a 6-year bond with a spot rate of 13%. Which bond would you invest in if you expect the 2-year spot rate, 4 years from today to be 16% (F 4, 6)?