The relationship among the following pairs of isomers is
$I - A, II - B, III - B, IV - D$
$I - A, II - A, III - B, IV - D$
$I - B, II - A, III - B, IV - D$
$I - B, II - B, III - A, IV - B$
$C{H_3}CH(OH).COOH$ shows
Which of the following compounds exhibit stereoisomerism
Among the following which one can have a meso form?
Which of the following carbohydrate have $'L'-$ configuration ?