According to the graphs in the figure below, which of the following is true?
(a) f ( x ) = g ′ ( x ) = h ″ ( x ) {\displaystyle f(x)=g'(x)=h''(x)}
(b) f ′ ( x ) = g ″ ( x ) = h ( x ) {\displaystyle f'(x)=g''(x)=h(x)}
(c) f ″ ( x ) = g ( x ) = h ′ ( x ) {\displaystyle f''(x)=g(x)=h'(x)}
(d) f ″ ( x ) = g ′ ( x ) = h ( x ) {\displaystyle f''(x)=g'(x)=h(x)}
