A meso compound :
(a) is an achiral molecule which contains chiral carbons
(b) contains a plane of symmetry or a centre of symmetry
(c) is optically inactive
(d) is characterized by all of the above
(a) is an achiral molecule which contains chiral carbons
(b) contains a plane of symmetry or a centre of symmetry
(c) is optically inactive
(d) is characterized by all of the above