Which of the Following Definitions Best Defines a "Continuum of Care

Which of the following definitions best defines a "Continuum of care?"

A) A treatment system in which clients enter treatment at a level appropriate to their needs and then step up to a more intense treatment or down to less intense treatment as needed.
B) A range of inpatient and outpatient services that are available to a patient,but not necessarily utilized.
C) An element of care providing consistency and flexibility in the spectrum,intensity and duration of addiction treatment.
D) An outdated system of care that has been replaced by a triadic level of care.