Question 1101725
It's B, nonremovable discontinuity.
(x^2+9)/x-3).  The first cannot be factored, because it is a sum but not a difference of squares.  This isn't a hole, a removable discontinuity, but a true vertical asymptote.
{{{graph(300,300,-10,10,-100,100,(x^2+9)/(x-3))}}}