A nursing student asks the nurse to differentiate the pathology of Alzheimer's disease from that of Parkinson's disease.Which description is correct?

Parkinson's disease is characterized by an imbalance of dopamine and acetylcholine.

Parkinson disease involves increased dopamine production and decreased acetylcholine.

Alzheimer’s disease is caused by decreased amount of dopamine and degeneration of cholinergic neurons.

Alzheimer’s disease involves a possible excess of acetylcholine and neuritic plaques.