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Q.) P, Q, R and S are the points of intersection with the coordinate axes of the lines px+qy=pq and qx+py=pq, then (P, Q > 0)
[A]
P, Q, R, S form a parallelogram
[B]
P, Q, R, S form a rhombus
[C]
P, Q, R, S are concyclic
[D]
none of these
[A] P, Q, R, S form a parallelogram
[B] P, Q, R, S form a rhombus
[C] P, Q, R, S are concyclic
[D] none of these
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