If \( f(x)=x^{3}-x^{2}-100 x+1001 \) then which of the following is TRUE? (a) \( f(2000)f(2001) ...

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If \( f(x)=x^{3}-x^{2}-100 x+1001 \) then which of the following is TRUE?
(a) \( f(2000)f(2001) \)
(b) \( f(1 / 1944)f(1 / 2000) \)
(c) \( f(x+1)f(x-1) \)
(d) \( f(3 x-5)f(3 x) \)
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