You have the following data on three stocks:

$\backslash$table$[[$Stock$,$Standard Deviation,Beta$],[$A$,20\%,0\mathrm{.}59],[$B$,10\%,0\mathrm{.}61],[$C$,12\%,1\mathrm{.}29]]$

If you are a strict risk minimizer, you would choose Stock $$ if it is to be held in isolation and Stock $$ if it is to be held as part of a well$-$diversified portfolio.

a$.B$;$A.$

b$.C$;$B.$

c$.$ A; A$.$

d$.$ A; B$.$

e$.C$;$A.$