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 $(f g) (x)$ .
- $f(x) =5 x+3, g(x) =4 x-8$

A) $20 x^{2}-52 x+24$
B) $20 x^{2}-28 x-24$
C) $9 x^{2}+27 x-24$
D) $4 x^{2}-36 x-48$