One-year, five-year and ten-year treasury bond interest rates are given today as 3%, 6% and 6%, respectively. Investor "A" decides to buy only one-year bonds. Investor "B" is undecided between five-year and ten-year bonds, stating that he is equidistant from both. What is the name of the theory in which behavior "A" is compatible? if he buys only one year maturity, what is the reason for this according to the related theory? What is the name of the theory in which the investor "B" behavior is compatible? If the investor "B" is undecided between five-year and ten-year bonds, saying that he is equidistant from both, what is the reason according to the theory it is related to?