Q: In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.
Question: What neurotransmitter has a type of receptor called muscarinic ?: 
 Options:  <0> Acetylcholine <1> Dopamine <2> Serotonin <3> Noradrenaline <4> Adrenalin.
A:
psychology