Select the pair of functions representing f(x) and g(x) if f(g(x))=8x+1

A) f(x)=2x+3 and g(x)=4x-1

B) f(x)=4x-1 and g(x)=2x+3

C) f(x)=2x-1 and g(x)=4x

D) f(x)=2x-3 and g(x)=4x-1