For the Pair of Functions, Find the Product $(f g)(x)$
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Multiple Choice

For the pair of functions, find the product $(f g) (x)$ .
- $f(x) =6 x, g(x) =8 x-6$

A) $14 x^{2}-6 x$
B) $-48 x^{2}-36 x$
C) $48 x-36$
D) $48 x^{2}-36 x$