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Identify the correct set of reagents or reaction conditions ‘X’ and ‘Y’ in the following set of transformation.

1. X = conc.alc. NaOH, 80°C, Y = Br 2 /CHCl 3
2. X = dil.aq. NaOH, 20°C, Y = HBr/acetic acid
3. X = conc.alc. NaOH, 80°C, Y = HBr/acetic acid
4. X = dil.aq. NaOH, 20°C, Y = Br 2 /CHCl 3

Correct answer: X = conc.alc. NaOH, 80°C, Y = HBr/acetic acid

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