Research on Caregivers of Patients with Alzheimer's Disease Has Found

Research on caregivers of patients with Alzheimer's disease has found

A) emotional and physical effects of caregiving varies widely across different cultures.
B) negative health effects are associated with levels of social support and distress.
C) emotional distress tends to be short-lived since the disease progresses so quickly.
D) negative health effects occur only for those caregivers who had poor health to begin with.