Use the below information to answer the following question.

$\backslash$table$[[$Investment$,$Expected Return $E(r),$Standard Deviation$],[1,0\mathrm{.}12,0\mathrm{.}3],[2,0\mathrm{.}15,0\mathrm{.}5],[3,0\mathrm{.}21,0\mathrm{.}16],[4,0\mathrm{.}24,0\mathrm{.}21]]$

$U=E(r)-(\frac{A}{2})s^2,$ where $A=4\mathrm{.}0.$

Based on the utility function above, which investment would you select?

$2$

$3$

$4$

Cannot be determined from the information given.

$1$