AP ICET 2017 Shift 1 Paper

Directions for questions 56 to 60
In a certain code, every nth letter in the English alphabet is coded as letter where r is the remainder when 5n+7 is divided by 26 and 1≤r≤26. For example,the 10th letter J is coded as 5th letter E.since (5×10)+7=57=(2×26)+5. For decoding the reverse process is followed. Based on this answer the questions 56 to 60.