b$.$ As an equity portfolio manager, you may use certain risk$-$adjusted performance measures.

Treynor Index, William Sharpe, Michael Jensen

Using the following table evaluate which is better than other using three different measure of performance evaluation.

$\backslash$table$[[$Asset$,E(R)\%,$beta,Stdv$],[x,12,1\mathrm{.}25,16],[Y,11,1\mathrm{.}0,12],[$Risk$-$free,$3,0,0],[$Market index,$12,1,12]]$