Heena want to invest in stock market but confused which stock to select. On the basis of below information suggest her which stock will give good return, so that she can take good investment decision.

Probability

Return on stock A

Return on stock B

$10\%$

$5\%$

$3\%$

$20\%$

$10\%$

$15\%$

$30\%$

$15\%$

$12\%$