Which is the composition f(g(x)) , if f(x)=-x-3 and g(x)=7+5 x ?
(A) f(g(x))=4 x+4 .
(B) f(g(x))=4 x-10 .
(C) f(g(x))=-5 x-8 .
(D) f(g(x))=-5 x-10 .