Which Statement Best Describes the Results of the Autoimmune Disease

Which statement best describes the results of the autoimmune disease myasthenia gravis?

A) Communication at the neuromuscular junction is blocked by preventing acetylcholine from binding to nicotinic cholinergic receptors.
B) There is blocking of sodium channels in the axon of the presynaptic axon.
C) There is degradation of the enzyme acetylcholinesterase.
D) A decrease in the number of functional receptors on the muscle cell surface impairs its ability to respond to acetylcholine.
E) There is a decrease in the amount of acetylcholine released from the synaptic terminal.