Factor Completely $49 x^{5}-100 x$ A) $\left(7 x^{2}+10\right)\left(7 x^{2}-10\right)$ B) $x\left(7 x^{2}+10\right)(x+1)(x-1)$ C) $x\left(7 x^{2}+10\right)\left(7 x^{2}-10\right)$

Factor completely. If the polynomial cannot be factored, write "prime."
- $49 x^{5}-100 x$

A) $\left(7 x^{2}+10\right) \left(7 x^{2}-10\right)$
B) $x\left(7 x^{2}+10\right) (x+1) (x-1)$
C) $x\left(7 x^{2}+10\right) \left(7 x^{2}-10\right)$
D) Prime