It is possible to make a meaningful word with the second, the third, the ninth, the tenth, the thirteenth, the fourteenth and the eighteenth letters of the word COUNTERINTELLIGENCE, using each letter only once, except the second letter, which should be used twice, which of the following will be the third letter of that word ? If no such word can be formed give ′X′ as the answer, and if only two such words can be made give answer ′Y′. And if more than two such words can be formed give answer ′Z′.