Write the following as a single rational expression.



fraction numerator 170 plus 50 x over denominator x end fraction divided by fraction numerator 120 plus 30 x over denominator x end fraction



A.)



fraction numerator 17 plus 5 x over denominator 12 plus 3 x end fraction

B.)



fraction numerator 50 plus 20 x over denominator x squared end fraction

C.)



fraction numerator 2 left parenthesis 25 plus 10 x right parenthesis over denominator x squared end fraction

D.)



fraction numerator 120 plus 30 x over denominator 170 plus 50 x end fraction