Over the past two years, Suzie began noticing that her grandmother was becoming increasingly forgetful about everyday tasks. She would sometimes forget that she was cooking and leave the house with the stove still on, and end up burning the entire meal. Now she is even beginning to forget the names of her own grandchildren. Suzie's grandmother is likely suffering from _____.
◦ anterograde amnesia
◦ Alzheimer's disease
◦ retrograde amnesia
◦ long-term potentiation