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Question 2: A matriculation student was instructed to distinguish the compounds below : I II III IV He conducted an experiment using polarimeter to study the optical activity of this compounds. The results obtained from the polarimeter analyser are shown below : (a) Categorise the compounds given into sample A and B. (b) (i) State the type of isomerism shown by isomer A. (ii) Draw the isomeric pair in Question 2b (i) and justify your answer. [8 Marks]