If in the given alphabet the first four letters are interchanged with the second four letters, third four letters are interchanged with the fourth four letters, fifth four letters with the sixth four letters, and Y interchanges its position with Z, what will be the seventh letter to the right of the nineteenth letter from your right? A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
1) N
2) M
3) I
4) O
5) K

Explanation

5