May There Be Registration of a Parcel of Land Already

May there be registration of a parcel of land already decreed in favor of another?

A) Yes, due to prescription.
B) Yes, due to laches.
C) No, the land registration court has no jurisdiction to order the registration of a property already registered, otherwise, it is void. (MWSS v. CA, 215 SCRA 783)
D) Yes, for as long as there is compliance with the due process clause.