For the polynomial function f(x)=6(x-7)(x+6)2 answer the following questions. (a) List each real zero and its multiplicity. (b) Determine whether the graph crosses or touches the x-axis at each x-intercept. (c) Determine the maximum number of turning points on the graph. (d) Determine the end behavior; that is, find the power function that the graph of f resembles for large values of x. (a) Find any real zeros of f. Select the correct choice below and, if necessary, fill in the answer box(es) to complete your choice. OA. The real zero of fis with multiplicity (Type an exact answer, using radicals as needed. Type integers or fractions.) OB. The smallest zero of f is OC. The smallest zero of fis The largest zero of f is with multiplicity (Type an exact answer, using radicals as needed. Type integers or fractions.) with multiplicity The middle zero of fis (Type an exact answer, using radicals as needed. Type integers or fractions.) with multiplicity with multiplicity The largest zero of fis with multiplicity OD. There are no real zeros.