If it is possible to make only one meaningful English word with the 1st, 6th, 7th, and 9th letters of the word RETIREMENT, which of the following will be the fourth letter of that word? If no such word can be made give ‘X’ as the answer and if more than one such word can be made give ‘Y’ as the answer.
1
M
2
R
3
N
4
X
5
Y