question_answer

If it is possible to make a meaningful word from the second, fifth, eighth and tenth letters of the word RESIDENTIAL using each letter only once, then the last letter of the word would be your answer. If more than one such word can be formed, your answer would be 'X' and if no such word can be formed, your answer would be 'Z?. (SOF IMO 2017)

A)  X                                

B)  Z                                

C)  E                                

D)  N