$\overline{\mathrm{a}}\mathrm{\hspace{0.17em}}\mathrm{and}\hspace{0.17em}\hspace{0.17em}\overline{\mathrm{b}}$form the consecutive sides of a regular hexagon ABCDEF.

	List I		List II
(A)	If $\overline{\mathrm{CD}}=\mathrm{x}\overline{\mathrm{a}}+\mathrm{y}\overline{\mathrm{b}},$then	(P)	$\mathrm{x}=-2;\mathrm{y}=1$
(B)	If $\overline{\mathrm{CE}}=\mathrm{x}\overline{\mathrm{a}}+\mathrm{y}\overline{\mathrm{b}},$then	(Q)	$\mathrm{x}=-2,\mathrm{y}\in \mathrm{R}$
(C)	If $\overline{\mathrm{AE}}=\mathrm{x}\overline{\mathrm{a}}+\mathrm{y}\overline{\mathrm{b}},$then	(R)	$\mathrm{y}=1,\mathrm{x}=-1$
(D)	If $\overline{\mathrm{AD}}=-\mathrm{x}\overline{\mathrm{b}},$then	(S)	$\mathrm{y}=2;\mathrm{x}=-1$
		(T)	$\mathrm{x}=0;\mathrm{y}=2$

	(A)	(B)	(C)	(D)
(1)	R	P	Q	S
(2)	R	P	T	S
(3)	R	P	S	T
(4)	R	P	S	Q