How Is the Classification of Inmates' Housing Needs Determined Differently

How is the classification of inmates' housing needs determined differently now than in the past?

A) Inmate housing is now determined on a "first come, first served" basis.
B) Inmate housing is now determined based on questionnaires, similar to how roommates are determined in college dorms.
C) Inmates are now assigned to housing based on an objective "lottery" system.
D) Inmates are now assigned to live with prisoners similar to themselves based on an internal classification.