HR Industries $($HRI$)$ has a beta of $2\mathrm{.}2,$ while LR Industries' $($LRI$)$ beta is $1\mathrm{.}60.$ The riskfree rate is $3\%,$ and the required rate of return on an average stock is $10\%.$ The expected rate of inflation built into $r_{RF}$ falls by $1\mathrm{.}0$ percentage points, the real risk$-$free rate remains constant, the required return on the market falls to $9\mathrm{.}0\%,$ and all betas remain constant. After all of these changes, what will be the difference in the required returns for HRI and LRI, that is$,r_{\text{H}\text{R}\text{I}}-r_{\text{L}\text{R}\text{I}}.$

$4\mathrm{.}20\%$

$3\mathrm{.}78\%$

$4\mathrm{.}62\%$

$3\mathrm{.}99\%$

$4\mathrm{.}41\%$