Intermediates formed in the reactions $P$ and $Q$ are:
$P: CH_3-CH=CH_2 \xrightarrow{HCl}$
$Q: CH_3-CH=CH_2 \xrightarrow[\text{Peroxide}]{HCl}$

• A
  $P \to CH_3-CH^{+}CH_3$,$Q \to CH_3-CH(\bullet)-CH_2Br$
• B
  $P \to CH_3-CH^{+}CH_3$,$Q \to CH_3-CH^{+}CH_3$
• C
  $P \to CH_3-CH(\bullet)-CH_3$,$Q \to CH_3-CH^{+}CH_2Cl$
• D
  $P \to CH_3-CH^{+}CH_3$,$Q \to CH_3-CH(\bullet)-CH_2Cl$