An alkene on reductive ozonolysis gives 2 molecules of C H 2 ( C H O ) 2 . The alkene is:

A) 2,4−hexadiene
B) 1,3−cyclohexene
C) 1,4−cyclohexadiene
D) 1−methyl−1,3−cyclopentadiene
E) 1,2−dimethylcyclopropene