Examine Figure 1 and answer the questions that follow. Only provide the letter of the portfolio(s) in your answer. Figure 1: The efficient frontier. 2.1 Which letters correspond to efficient portfolios? Start writing here: 2.2 Provide one example of an inefficient portfolio. Start writing here: 2.3 Which portfolio provides the greatest return for the lowest risk? Start writing here:

Figure 1: The efficient frontier