Mary, a Retired Accountant in In Her Early Seventies, Keeps

Mary, a retired accountant in in her early seventies, keeps losing her keys and asks the same questions over and over again.To avoid forgetting, she often makes a list of things she has to do but always forgets to look at them later.She also requires more assistance in managing her finances.Mary is most likely in the early stages of

A) aphasia.
B) dementia.
C) delirium.
D) agnosia.