Which of the following does NOT occur during muscle contract

Which of the following does NOT occur during muscle contraction?

A
Acetylcholine binds to a receptor and ultimately this changes the electric potential of the muscle cell membrane
B.
Acetylcholine binds to its receptor, and enters the cell via active transport
C.
The change in electric potential of the muscle cell membrane triggers the sarcoplasmic reticulum to release calcium
D.
Acetylcholine is exocytosed from the neuron
E.
All of the above do occur during muscle contraction

Solution

All statements are true except

Acetylcholine binds to its receptor, and enters the cell via active transport.

Acetylcholine binds to its receptor and open the channels. Acetylcholine after attached with its receptors, did not move to anywhere.