In an electrophilic addition reaction of olefins, the stability of carbocations plays a crucial role. Consider the compounds $\mathbf{P}$ and $\mathbf{Q}$ that can undergo such reactions with different reagents.


With reference to the above reactions, the correct statement(s) is(are):

• A

  In the HBr addition, the rate of the reaction is faster for $\mathbf{Q}$ than for $\mathbf{P}$.
• Correct answer
  B

  HBr addition to P gives an equal mixture of enantiomers as a major product.
• C

  P reacts with diborane followed by oxidation with $\mathrm{H}_2 \mathrm{O}_2 / \mathrm{NaOH}$ gives racemic alcohol as a major product.
• Correct answer
  D

  Reaction of $\mathbf{P}$ with $\mathrm{O}_3$ followed by treatment with $\mathrm{Zn} / \mathrm{H}_2 \mathrm{O}$ gives methyl formate and formaldehyde.

Hence, the correct answer is options: 'B', 'D'.