Which statement describes the incidence and prevalence of a chronic illness like schizophrenia?
a) The prevalence and incidence of schizophrenia are equally low.
b) The prevalence and incidence of schizophrenia are equally high.
c) The prevalence of schizophrenia is high, and the incidence is low.
d) The prevalence of schizophrenia is low, and the incidence is high.