Myasthenia Gravis,a Disease Characterized by Muscle Weakness and Fatigue,is Often

Myasthenia gravis,a disease characterized by muscle weakness and fatigue,is often treated by medications that inhibit acetylcholinesterase (AChE) .Which of the following statements best explains why this treatment would be effective?

A) Inhibiting AChE would delay the breakdown of acetylcholine (ACh) in the synaptic gap.This in turn would make smaller amounts of ACh more effective in stimulating muscles.
B) Inhibiting AChE would ensure that more acetylcholine (ACh) is transported back into the presynaptic neuron through the process of reuptake.
C) Inhibiting AChE would increase the rate of synthesis of acetylcholine (ACh) in motor neurons.
D) AChE has a general inhibitory effect in the brain,so blocking its action would be stimulating to many systems,including movement.