One mole of an unsaturated hydrocarbon on reductive hydrolysis gives one mole each of formaldehyde, acetaldehyde and methyl glyoxal. The hydrocarbon is
A. `CH_(2)=CH-CH=CH-CH_(3)`
B. `CH_(3)-CH=CH-CH=CH-CH_(3)`
C. `CH_(2)=C(CH_(3))-CH=CHCH_(3)`
D. `CH_(2)=CH-C(CH_(3))=CHCH_(3)`