Find the derivative.

$y=e^{4x^2}x$

A$.\frac{dy}{dx}=8x{e}^{2x}1$

B$.\frac{dy}{dx}=8x{e}^{4x^2}1$

C$.\frac{dy}{dx}=8x{e}^{x^2}1$

D$.\frac{dy}{dx}=8xe1$

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