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: Separations by capillary zone electropheresis (CZE) are characterized in that the electrophoretic medium: 
 Options:  <1> It is always formed by 1.0 M HCl. <2> It is always formed by NH3 1.0 M. <3> It is homogeneous throughout the capillary. <4> It is not homogeneous throughout the capillary. <5> It has a pH gradient throughout the entire capillary.
[A]: 3


[Q]: Question: What is the maximum volume of air that a subject can breathe out after maximum inspiration ?: 
 Options:  <1> Total lung capacity. <2> Expiratory reserve volume. <3> Inspiratory capacity <4> Vital capacity <5> Residual volume
[A]: 4


[Q]: Question: One patient is diagnosed with a 4 cm lung cancer without pleural contact in the right upper lobe. The extension study reveals the presence of metastasis in right parahilar nodes, without evidence of distant metastasis. The staging of the tumor will be: 
 Options:  <1> Stage I. <2> Stage IIA. <3> Stage IIB. <4> Stage IIIA. <5> Stage IIIB.
[A]:
2