A steel hollow structural section $($HSS$)$ flexural member is subjected to the load $P=12\mathrm{.}2$ kips. If $L=25in.,$ determine the normal stress ${}_y$ acting at point $H.$

A$)10\mathrm{.}87$ ksi

B$)8\mathrm{.}55$ ksi

C$)8\mathrm{.}11$ ksi

D$)11\mathrm{.}65$ ksi

E$),9\mathrm{.}95$ksi