dy dx For the following composite function, find an inner function u = g(x) and an outer function y = f (u) such that y = f(g(x)). Then calculate 5x y = Cos 4 Select the correct choice below and fill in the answer box to complete your choice. dy d OX O A. dx du dx dy d d 5X O B. (cos U) . dx du dx 4 dy d A X O C. (COS U) . dx du dx dy d 5u d (COS X) = OD. dx dx