Task: Text Categorization
Input (English): Question: In the electrophoresis of hemoglobin in cellulose acetate: 
 Options:  <0> Neutral Red or Evans Blue are used as dyes. <1> Three differentiated fractions are obtained: Hb A, Hb A2 and carbonic anhydrase. <2> The majority fraction is HbA2. <3> The hemolysate is obtained using CINH4. <4> Acetone-Ethanol (1: 1) is used as decolorizer.
Output (English): biology