If (A) P + Q means P is the brother of Q ;
(B) P x Q means P is the father of Q ;
(C) P - Q means P is the sister of Q ;
which of the following represents S is the niece of T ?
Q is the brother of R;
P is the sister of Q;
T is the brother of S;
S is the daughter of R.
Who are the consins of Q ?