This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Crusted scabies is caused by sarcoptis scabei Ivermectin is used to treat it. It acts by following neurotransmitter - 
Select and explain. 
A. Acetylcholine, B. Adrenaline, C. Noradrenaline, D. GABA
D: GABA
Answer: D: GABA 
Explanation: Ans. is 'd' i.e., GABA o Ivermectin acts through a special type of glutamate gated Cl- channel. Potentiation of GABAergic transmission has also been observed.