Write the equation of the graph shown below in factored form.
a. f(x)=(x-2)^2(x+1)(x-3)
b. f(x)=(x+2)^2(x-1)(x+3)
c. f(x)=(x+2)^2(x+1)(x+3)
d. f(x)=(x+2)^2(x-1)(x-3)
