onsider the Bode plot shown in Figure Q$3.$

Figure Q$3$ Bode plot of a system

Which loop transfer function $KG(s)$ corresponds to the Bode plot in Figure Q$3$:

i$.KG(s)=\frac{24}{s(s+2)(s+6)}$

ii$.KG(s)=\frac{100}{s(s+5)(s+6)}$

iii. $KG(s)=\frac{24}{s^2(s+6)}$

iv$.KG(s)=\frac{10}{s^2+0\mathrm{.}5s+10}$

Is the system stable? Or not?

If it is stable, find the Phase Mar gin and Gain Margin approximately.

$[4+2+4$ marks$]$