MCQ
What is $A$ in the following reaction ?


- A

- B

- ✓

- D







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$KOH + {O_3} \to coloured\,solid\,(a) + Gas\,(b) + {H_2}O$
Select $CORRECT$ statement
$(1)\,CH_3C \equiv C - CH_3$ $(2)\,CH_3CH_2 -CH_2 -CH_3$
$(3)\, CH_3CH_2C \equiv CH$ $(4)\, CH_3CH = CH_2$