For the aldotetroses I-IV, the combination of true statements, among P-T, is<br><img src="/images/question-image/engineering-chemistry/basics-of-organic-reaction-mechanism/1690894498-for-the-aldotetroses-i-iv-the-combination.png" title="Basics of Organic Reaction Mechanism mcq question image" alt="Basics of Organic Reaction Mechanism mcq question image"><br>P = I and II are diastereomers and II and III are enantiomers<br>Q = I and IV are mesomers and are optically inactive<br>R = I and III can be interconverted by a base catalysed isomerisation<br>S = only I and IV are HlO₄ cleavable<br>T = I and III are D-sugars and II and IV are L-sugars