The correlation coefficient between stock A and the market portfolio is $+0\mathrm{.}6.$ The standard deviation of return of the stock is $30\%$ and that of the market portfolio is $20\%.$ What is the beta of the stock?

The correlation coefficient between stock A and the market portfolio is $+0\mathrm{.}6.$ The standard deviation of return of the stock is $30\%$ and that of the market portfolio is $20\%.$ What is the beta of the stock?

$0\mathrm{.}9$

$1\mathrm{.}1$

$1\mathrm{.}0$

$0\mathrm{.}6$