Which of the Following Statements About the Evolution of Development

Which of the following statements about the evolution of development is false?

A) Evolution by natural selection "works" like a tinker, assembling new structures by combining and modifying available materials.
B) Nearly all evolutionary innovations are the result of modifications of previously existing mechanisms and structures.
C) The genes that control development are highly conserved.
D) Natural selection can act on any signaling pathway that affects development.
E) All of the above are true; none is false