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Discontinuities in Rational Functions

APCALC-ZJGGE3

Which of the following is not a removable point of discontinuity for the function:

$$f(x)=\frac{x(x-2)(x-3)(x-4)^3}{x(x-2)^2(x-3)(x-4)^3}?$$

A

$x=0$

B

$x=2$

C

$x=3$

D

$x=4$