The standard deviation and expected returns for 4 portfolios (A,B,C,and D) are graphed on the following efficient frontier: 
Which of the following portfolios are inefficient?
Definitions:
Third Percentile
A statistical measurement indicating that an individual’s score is above only 3% of the population in a given data set.
Hearing
The ability to perceive sound by detecting vibrations through an organ such as the ear.
Separate Reception Area
A designated waiting space in a healthcare facility, separate from treatment areas, intended to provide patients and visitors with a place to wait before receiving services.
Sick Children
Refers to minors who are currently suffering from an illness or health condition, requiring treatment and care.
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