Match the reaction from column-I with the properties of products from column-II 

	COLUMN-I		COLUMN-II
I)		P)	E2 mechanism
II)		Q)	E1and mechanism
III)		R)	E1CB mechanism
IV)		S)	Products are pair of Enantiomers.
		T)	Products are pair of Diastereomers.

 

(A) Deuterium incorporation guarantee the EIc.B. Also product show geometrical isomerism (R,T)     (B) Absence of deuterium in product indicates E2 not EI cB. Product show geometrical isomerism (P,T).   
C) In presence of weak base and nucleophile $\left(C_2{H}_{5}OH\right)$ and heat, both  $S_{N}1$ and E1 reaction may take place. There will a pair of enantiomers as substitution products (Q,S)   
D) $S_{N}2$  And E2 will take place (P, S, T)     
 $A\to R,T;B\to P,T;C\to Q,S;D\to P,S,T$.