Which of the following structures is not correctly matched ?

Options

A. `alpha`- Methoxypropionaldehyde - `overset(" "H_(3)CO)overset(" " |)(H_(3)C- CH)-overset(O)overset("||")C-H`
B. 3 - Hydroxybutanal - `CH_(3)-overset(OH)overset(|)(CH)-CH_(2)CHO`
C. 4 - Oxopentanal - `CH_(3)CH_(2)CH_(2)-overset(O)overset("||")C-CHO`
D. Di-sec. - butylketone - `CH_(3)CH_(2)-overset(" CH"_(3))overset(|)(CH)-overset(O)overset("||")C-overset(" CH"_(3))overset(|)(CH)-CH_(2)CH_(3)`

Answer

C

Explanation

4-Oxopentanal : `CH_(3)-overset(O)overset("||")C-CH_(2)-CH_(2)-CHO`