Match the compounds in Column I with their characteristic test(s)/reaction(s) given in Column II. Indicate your answer by darkening the appropriate bubbles of the 4 $$\times$$ 4 matrix given in the ORS.

	Column I		Column II
(A)		(P)	sodium fusion extract of the compound gives Prussian blue colour with FeSO$$_4$$.
(B)		(Q)	gives positive FeCl$$_3$$ test.
(C)		(R)	gives white precipitate with AgNO$$_3$$.
(D)		(S)	reacts with aldehydes to form the corresponding hydrazone derivative.