Correct Answer - A
`{:(" "O" "OH),(" ||"" |"),(underset((A))(C_(6)H_(5) C - OC_(2)H_(5)) underset(HOH)overset(2CH_(3)MgBr)rarr C_(6)H_(5) - C - CH_(3)),(" |"),(" "CH_(3)),(" "443K darr H_(2)SO_(4)),(C_(6)H_(5) - C = O + HCHO underset((ii) Zn //H_(2)O)overset((i)O_(3))larr C_(6)H_(5) - C = CH_(2)),(" |"" |"),(" "CH_(3)" " underset((B)"Alkane")(CH_(3))):}`