Match the column (I) and (II). (Martix)

Answer

a-q,r; b-q,s; c-p,q r; d-q,s

Explanation

(a) Compound doesn't have chiral centre but has stereocentre and is optically active due to absence of P.O.S.
(b) Compound has P.O.S. and has C.O.S. and has 2-stereocentres.
( c ) Compound has chiral centre stereocentre and optically active due to absence of P.O.S.
Compound has stereocentre of P.O.S. and optically inactive.