In the following sequence of reactions, the alkene affords the compound B
CH3CH = CHCH3 $\xrightarrow{\;O_3\;}$ A $\underset{Zn}{ \xrightarrow{\;H_2O\;}}$ B
The compound B is
CH3CH2CHO
CH3COCH3
CH3CH2COCH3
CH3CHO
In the following sequence of reactions, the alkene affords the compound B
CH3CH = CHCH3 $\xrightarrow{\;O_3\;}$ A $\underset{Zn}{ \xrightarrow{\;H_2O\;}}$ B
The compound B is