Which of the Following Was NOT a Way in Which

Which of the following was NOT a way in which westward movement affected the South?

A) It led to the increased breaking up of slave families and communities.
B) The plantation economy expanded beyond the coastal regions.
C) Transportation and banking remained adjuncts of the plantation system.
D) The South had to develop a highly effective railroad system to transport goods from west to east.
E) The South's agrarian, slave-based social order reproduced itself as settlers went west.