IBPS RRB Office Assistant 19 Aug 2023 Shift 2 Paper

If it’s possible to make a meaningful word from the 3rd, 5th, 6th, and 7th letters of the word 'MONSTER', then which will be the last letter of the word? Mark ‘X’ if no such word can be formed, ‘M’ if more than 1 such word can be formed.