What Does Research Suggest Is the Relationship Between Mental Health

What does research suggest is the relationship between mental health treatment and homelessness in Canada?

A) Deinstitutionalization created an increase in homelessness.
B) More than 90% of homeless people in Canada have a mental health disorder.
C) Symptoms of mental health disorders make living on the streets easier than living elsewhere for many people with mental illnesses.
D) Homelessness has increased because of an increase in unemployment and a shortage of low-income housing, which affects many mentally ill people indirectly.