An alkene "A" on reaction with $O_3$ and $Zn-H_2O$ gives propanone and ethanal in equimolar ratio.Addition of HCl to alkene "A" gives "B" as the major product. The structure of product "B" is :-

Question

https://clay6.com/mpaimg/ne14.jpg

( A ) 1
( B ) 2
( C ) 3
( D ) 3