Which statement correctly describes the number of real zeros of the graph of the following polynomial function? f(x) = 81 - 1 - 81- 2x'+ 31 + 21' + 412 - 6: O There are 10 or more real zeros. O There are 8 or more real zeros. O There are 9 or more real zeros. There are 8 or fewer real zeros. There are 9 or fewer real zeros. O There are 10 or fewer real zeros