If it is possible to make only one meaningful word with the first, second, third and fifth letters of the word 'TECHNOLOGY', which of the following would be the third letter of that word? If no such word can be made, give 'X' as your answer and if more than one such word can be formed, give your answer as 'Y'

the pattern is ... babc

All are rodents or rat family, except cat.

Barrow' is man-driven cart whereas others are usual.

Except option (d), all letters in pairs having difference of four.

The relationship is x : (x² - 9).

63/3 = 21
27/3 = 9

F

Except option (c) rest all are perfect squares.

Except, `Plate', all two in number.

All other terms are used to denote the size.