In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.

Q: Question: In the parasympathetic system: 
 Options:  <1> The preganglionic neuron is in thoracic spinal cord. <2> Postganglionic neurons have short axons. <3> Postganglionic fibers release noradrenaline. <4> Postganglionic neurons have muscarinic receptors. <5> Numerous neurons innervate vascular smooth muscle of the extremities.

A: 2
****
Q: Question: Point out the correct answer in relation to the monitoring of plasma drug concentrations: 
 Options:  <1> Allergy reactions are related to the dose administered. <2> The extraction of the blood sample must be done once the balance of drug distribution in the organism has been reached. <3> The information provided by the analytical determination of plasma concentration is sufficient to perform the dosage individualization. <4> Only the immunoassay methods are valid for carrying out the analytical determination of the blood samples. <5> It must be done for all drugs that are administered intravenously.

A: 2
****
Q: Question: The BRCA-1 gene mutation is associated with a high risk of: 
 Options:  <1> Acute myocardial infarction. <2> Breast cancer <3> Alzheimer disease. <4> Parkinson's disease <5> Tay-Sach disease.

A:
2
****