Instructions : Each question contains six statements followed by four sets of
combination of three. Choose the set in which the statements are logically related.

Statements:
(i) X and Y are siblings.
(ii) X and Y do not quarrel.
(iii) Siblings are known to quarrel often.
(iv) X and Y quarrel often.
(v) All those who quarrel are siblings.
(vi) X and Y cannot be siblings.