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: Indicate which of the following deficits leads to a porphyria: 
 Options:  <1> Phenylalanine hydroxylase. <2> 21 α-hydroxylase. <3> Ferrochelatase <4> Glucokinase. <5> Tyrosine hydroxylase.
[A]: 3


[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


[Q]: Question: The most appropriate microscopy to identify Treponema pallidum in exudates from syphilitic lesions is: 
 Options:  <1> Clear field without staining. <2> Clear field with simple staining. <3> Dark field <4> Phase contrast. <5> Polarized light
[A]:
3