For problem $8\mathrm{.}1$: What is the value of $f_b?$ Is it safe?

$14\mathrm{.}2k$ in$.2,$ Yes

$14\mathrm{.}2k$ in$.2,$ No

$24\mathrm{.}5k$ in$.2,$ Yes

$24\mathrm{.}5k$ in$.2,$ NO