Determine the vertical asymptote(s) of the function. If none exists, state that fact. X+ 3 f(x)= X3 - 10x2 + 21x Select the correct choice below and, if necessary, fill in the answer box(es) to complete your choice. and the rightmost asymptote is O A. The function has one vertical asymptote, (Type an equation.) O B. The function has two vertical asymptotes. The leftmost asymptote is (Type equations.) OC. The function has three vertical asymptotes. The leftmost asymptote is (Type equations.) OD. The function has no vertical asymptotes. the middle asymptote is and the rightmost asymptote is Click to select and enter your answer(s) and then click Check Answer. AI CA