How much return, after inflation, can an individual expect to earn if their portfolio has an expected nominal rate of return of $5\mathrm{.}20\%$ and inflation rate is expected to be $1\mathrm{.}50\%?$

$3\mathrm{.}998\%$

$7\mathrm{.}213\%$

$4\mathrm{.}889\%$

$3\mathrm{.}645\%$