What Does the Doctrine of Substantive Due Process Hold and When

What does the doctrine of substantive due process hold and when was it ascendant?

A) The regulation of property in most cases was a violation of due process; this doctrine was ascendant in the late nineteenth century
B) The regulation of property in most cases was a violation of due process; this doctrine is ascendant today
C) The regulation of property in most cases was not a violation of due process; this doctrine is ascendant today
D) Substantive due process is the same principle as "separate but equal"; this doctrine was ascendant in the late nineteenth and early twentieth centuries