Consider the following compounds.


The correct order for the rate of acid catalyzed dehydration is

• A

  $\mathrm{P} \gt \mathrm{Q} \gt \mathrm{R} \gt \mathrm{S}$
• Correct answer
  B

  $\mathrm{R} \gt \mathrm{P} \gt \mathrm{Q} \gt \mathrm{S}$
• C

  $\mathrm{S} \gt \mathrm{R} \gt \mathrm{P} \gt \mathrm{Q}$
• D

  $\mathrm{S} \gt \mathrm{P} \gt \mathrm{Q} \gt \mathrm{R}$

Hence, the correct answer is option: 'B'.