Consider the accompanying chart. The "investment opportunity set" of two assets, "X" & "Y" is represented by the curve {X,A,B,Y). You have three securities from which to build a portfolio. These are X, Y, and the "risk free" asset. Y Expected Return B A Risk What is Point (A) called? Explain its significance relative to the feasible portfolio combinations between point A and point X. Consider the accompanying chart. The "investment opportunity set" of two assets, "X" & "Y" is represented by the curve {X,A,B,Y}. You have three securities from which to build a portfolio. These are X, Y, and the "risk free" asset. Y Expected Return B A 1 Risk What is Point (B) called? Explain its significance relative to the feasible portfolio combinations on the curve between point X and point Y