Based on this paragraph, what can readers infer about people suffering from Alzheimer's disease?

People with Alzheimer's disease often become confused and forgetful in ways that interfere with their ability to work. Also, the person may forget parts of familiar at-home tasks, such as serving a meal once it is prepared. The person simply doesn't remember having made the meal. Someone suffering from this disease may be unable to recognize his or her own street or know how to find his or her house from a block away.They are highly successful at work.

They repeat their words several times.

They tend to lose their way.

They should be confined indoors.