AP ICET 2017 Shift 1 Paper

Directions for questions 56 to 60In 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 $1 \leq r \leq 26$. For example,the 10th letter J is coded as 5th letter E.since $(5 \times 10)+7=57=(2 \times 26)+5$. For decoding the reverse process is followed. Based on this answer the questions 56 to 60.