$CH_3-CH=CH_2$ $\xrightarrow{Br_2, hv (\text{low conc.})} \dots$ $\xrightarrow{Mg, \text{Dry ether}} \dots$ $\xrightarrow{CH_3-CO-CH_3, NH_4Cl} \dots$ $\xrightarrow{H^{+}, \Delta} (X)$. ઉપરની પ્રક્રિયાની અંતિમ નીપજ $(X)$ શું છે?

• A
  $CH_2=CH-CH_2-C(=CH_2)-CH_3$
• B
  $CH_2=CH-CH=C(CH_3)_2$
• C
  $CH_2=CH-CH_2-C(OH)(CH_3)_2$
• D
  $CH_2=CH-CH_2-CH(CH_3)-CH_2-OH$