Task: Question Answering
Input (English): Question: Which of these equalities is INCORRECT? 
 Options:  <1> Decil 1 = Centil 10. <2> Quartile 1 = Percentile 25. <3> Quartil 2 = Centil 20. <4> Decil 5 = Medium. <5> Quartile 3 = Centil 75.
Output (English): 3