The psychiatric nurse practitioner is seeing a 71-year-old African American male, who has been diagnosed with dementia of the Alzheimer’s type (DAT) and is prescribed rivastigmine. The hypothesized efficacy of this medication is primarily due to its: a. Affinity for presynaptic acetylcholine receptors b. Agonism of acetylcholinesterase and downstream decrease of acetylcholine c. Agonism and potentiating effects secondary to affinity for vesicular acetylcholinesterase d. Antagonism of acetylcholinesterase and downstream increase of acetylcholine