The Daughter of an Elderly Nursing Home Resident Is Crying

The daughter of an elderly nursing home resident is crying outside her father's room.When the nurse comforts her,she states,"It is so hard to come here to visit when my father doesn't even know who I am." The nurse knows the client is in which stage of Alzheimer's disease?

A) Early stage
B) Intermediate stage
C) Severe stage
D) End stage