The Sharpe Ratio of portfolio A is 0.9 and the Sharpe Ratio of Portfolio B is 0.5. Standard deviation A is 20% and standard deviation of B is 10%. The risk-free asset in the market has a return of 2%. Portfolio B is a better choice for an investor whose investment target is to maximise return while keeping standard deviation below 12%.

Is the above statement True or False? Give explanations.