Task: Text Categorization
Input (English): Question: The cyclotron ion resonance by Fourier transform is the basis of: 
 Options:  <0> A mass ionization system useful for elementary analysis. <1> A system of atomization that is applied in atomic absorption for elements capable of generating hydrides. <2> A mass analyzer. <3> A system for introducing the sample in plasma emission spectrometry. <4> A detector system in mass spectrometry.
Output (English): pharmacology