Portfolios A through J, which are listed in the following table along with their returns (rp) and risk (measured by the standard deviation, sp), represent all currently available portfolios in the feasible or attainable set.

Portfolio	Risk (sp)(%)	Return (rp) (%)
A	9.60	10.80
B	3.60	3.60
C	12.00	16.80
D	16.80	14.40
E	13.20	8.40
F	7.20	13.20
G	14.40	12.00
H	19.20	19.20
I	8.40	6.00
J	4.80	9.60

1. Plot the feasible, or attainable, set represented by these data on a graph showing portfolio risk, sp (x-axis), and portfolio return, rp (y-axis).

(12 marks)

2. Define and draw the efficient frontier on the graph in part a). (3 marks)

3. Determine which portfolios lie on the efficient frontier. Explain why do these portfolios dominate all others in the feasible set.

(7 marks)

4. Describe how would an investors utility function or risk-indifference curves be used with the efficient frontier to find the optimal portfolio.

(3 marks)