$q,29.$ A conducting rod with a square cross section $(3\mathrm{.}0cm3\mathrm{.}0cm)$ carries a $\frac{?}{\text{b}\text{a}\text{r}}($ current $)$ of $60$ A that is uniformly distributed across the cross section. What is the magnitude of the $($line$)$ integral ${\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}B*ds$ around a square path $(1\mathrm{.}5cm1\mathrm{.}5cm)$ if the path is centered on the center of the rod and lies in a plane perpendicular to the axis of the rod.

a$)14Tm$

b$)75Tm$

c$)38Tm$

d$)57Tm$

e$)19Tm$