Which of the following is the industrial method of preparation of acealdehyde?
A. `H_(2)C=CH_(2)+H_(2)Ooverset(Pd^(++))rarrCH_(3)CHO`
B. `CH_(3)COCHI+H_(2)overset(Pd)underset(BaSO_(4))rarrCH_(3)CHO+CHI`
C. `CH_(3)CNoverset(SnCI_(2))underset(HCI)rarrCH_(3)CH=NHoverset(H_(3)O^(+))rarrCH_(3)CHO`
D. none of the above
