Find all vertical asymptotes, x=a, of the following function. For each value of a, evaluate lim f(x), lim f(x), and lim f(x). Use oo or- co whenX-ax-aappropriate.f(x)=x²-9x+20x-6x+8OA. The vertical asymptote is x =is neither co nor - coOB. The vertical asymptote is x =Oc. There is no vertical asymptoteThe limits at this vertical asymptote are lim tox)=The limits at this vertical asymptote are lim f(x) =1-3lim f(x)=X-3tam f(x)=x1and lim f(x) does not exist andand lim f(x)=