# Consider the following reaction <br> $Ethanol \xrightarrow{PBr_3} X \xrightarrow{ alc. KOH} Y \xrightarrow[{(i)\;H_2O ,\; Heat}]{(i)\; H_2SO_4 room\; temperature} Z$ <br> The product Z is :
( A ) $CH_3CH_2-OH$
( B ) $CH_3CH_2-O-CH_2CH_3$
( C ) $CH_2=CH_2$
( D ) $CH_3CH_2-O-SO_3H$