How many of the following statements is/are correct? (A) α-D-(+)-glucopyranose and β-D-(+)-glucopyra — AITS & Test Series Chemistry Question

Question

How many of the following statements is/are correct? (A) α-D-(+)-glucopyranose and β-D-(+)-glucopyranose are diastereomers (B) D-Glucose and D-Mannose are diastereomers (C) Maleic acid and Fumaric acid are diastereomers (D) Dextro' form and 'Meso' form of tartaric acid (2,3-dihydroxybutanedioic acid) are diastereomers.