In Complex Multicellular Organisms, Only a Few Cells Become Differentiated

In complex multicellular organisms, only a few cells become differentiated as reproductive cells. Given this observation, which of the following statements are TRUE?

A) Nutrients for reproductive cells must be taken in by other cells and transferred though the body.
B) The loss of reproductive potential in cells differentiated for other functions severely limits the evolutionary potential of complex multicellular organisms.
C) Reproductive cells gain nutrients by diffusion from the environment and so must lie at the surface of complex multicellular organisms.
D) Signaling molecules from surrounding tissues can influence the development of eggs and embryos.