Difference between number of stories published in 2012 and 2013. Banking IBPS PO Mains Medium Simplification MCQ Question Difference between number of stories published in 2012 and 2013. Options A. (a) 9X+159X + 159X+15 B. (b) 6Y−126Y - 126Y−12 C. (c) 17Z−1217Z - 1217Z−12 D. (d) Both (a) & (c) E. (e) Both (b) & (c) linear equationsdifferencealgebradata interpretation