How Are Acetylcholine Receptors Distributed Along the Muscle Membrane

How are acetylcholine receptors distributed along the muscle membrane?

A) They are at a uniform density all along the muscle membrane.
B) They are distributed in a gradual gradient that increases density gradually with distance away from the NMJ.
C) They are distributed in a gradual gradient that decreases density gradually with distance away from the NMJ.
D) They are highly concentrated directly under the presynaptic terminal at the NMJ.
E) There are no acetylcholine receptors on muscle membrane, only on the nerve terminal at the NMJ.