Reminyl, Known Chemically as Galantamine, Works Like the Nation's Three

Multiple Choice

Reminyl, known chemically as galantamine, works like the nation's three other Alzheimer's medications. It modestly slows cognitive (mental ability) decline by inhibiting the breakdown of acetylcholine, a brain chemical vital for nerve cells to communicate, by the enzyme acetylcholineesterase.
-Acetylcholine is what?

A) an enzyme
B) a neurotransmitter
C) a voltage gated ion channel
D) a receptor
E) a source of fuel for neurons