An optically active compound having molecular formula `C_(6)H_(12)O_(6)` is found in two isomeric forms [A] and [B] in nature. When [A] and [B] are dissolved in water, they show the following equilibrium.
`{:(,[A],hArr,"equilibrium mixture",hArr,B),([alpha]_(D)=,111^(@),," "52.2^(@),,19.2^(@)):}`
(i) What are such isomers called ?
(ii) Can they be called enantiomers ? Justify your answer.
(iii) Draw the cyclic structure of anomer [A].