De-differentiation and the taking on of new cellular identities by previously mature cells is a common theme in plant development. Why might this behavior be much more prevalent in plants than animals? All of the responses provided are true. Select the response that BEST answers the question posed.

A)Due to their cell walls, plant cells cannot migrate as animal cells do
B)plants are in a state of continual growth and development throughout their lives
C)plants are rooted in place and so react to their environment by modifying their growth
D)plant meristems need to be able to take on different identities to produce different types of organs