Give the system

$x^{}=\left[\begin{array}{ccc}0& 1& -3\end{array}\right]$

$-2x\left[\begin{array}{c}0\end{array}\right]$

$5u$

$y=\left[\begin{array}{cc}1& 0\end{array}\right]x$

The system has $q,$ poles.

$1$

$2$

$3$