What are the zeros of the function? What are their multiplicities?
f(x)=3x^3-9x^2+6x
a. the numbers 2, 1, and 0 are zeros of multiplicity 1
b. the numbers 2, 1, and 0 are zeros of multiplicity 2
c. the numbers -2, -1, and 0 are zeros of multiplicity 2
d. the numbers -2, -1, and 0 are zeros of multiplicity 1