Task: Text Categorization
Input (English): Question: What percentage of the bicarbonate filtered in the glomerulus is reabsorbed under normal conditions along the nephron and in which segment is most of this reabsorption produced ?: 
 Options:  <0> It is reabsorbed almost 100%, mostly in the collector duct. <1> Approximately 50% is reabsorbed, mostly in the proximal convoluted tubule. <2> Approximately 50% is reabsorbed, mostly in the distal convoluted tubule. <3> Less than 20% is reabsorbed, mostly in the collecting duct. <4> It is almost 100% reabsorbed, mostly in the proximal convoluted tubule.
Output (English): pharmacology