Given that $Q(x)=(x-4{)}^2(x^2+1{)}^2(x^2-16{)}^4,$

$Q(x)$ has:

$($a$)$

single irreducible linear factors.

$($b$)$

repeated irreducible linear factors.

$($c$)$

single irreducible quadratic factors.

$($d$)$

repeated irreducible quadratic factors.