One per cent composition of an organic compound A is carbon=`85.71%` and hydrogen `=14.29%`. Its vapour density is 14. Consider the following reaction sequences.
`A overset(Cl_(2)//H_(2)O)to(B) overset(KCN//EtOH)underset(H_(3)O^(+))toC,` Identify C.
A. `CH_(3)-underset(OH)underset(|)CO_(2)H`
B. `HO-CH_(2)-CH_(2)-CO_(2)H`
C. `HO-CH_(2)-CO_(2)H`
D. `CH_(3)CH_(2)-CO_(2)H`