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'.

[EX Q]: Question: For self-registration to become an effective tool for clinical evaluation, it must meet the requirements of: 
 Options:  <1> Have a complete design that includes each of the significant units of a complex behavior and its memory. <2> Have a simple design, without sophistication or complexity, and always accompanied by a prior training for its completion. <3> Do not limit your compliance to the events that occurred at the time but also to the memory that you have of them at later moments. <4> Cover each and every one of the behaviors problems identified by the client. <5> Be completed by a significant person who knows the client well.
[EX A]: 2

[EX Q]: Question: The cellulose acetate filter membranes are compatible with: 
 Options:  <1> Organic solvents. <2> Aqueous solutions <3> All solvents <4> Organic solvents, except nitrogen. <5> Nitrogen solvents.
[EX A]: 2

[EX Q]: Question: The first stage of the mechanism of dehydration of cyclohexanol with H2SO4 is: 
 Options:  <1> Loss of OH-. <2> Formation of an ester sulfate. <3> Protonation of alcohol. <4> Loss of H + by alcohol. <5> Elimination of H2O from alcohol.
[EX A]:
3