Indicate the wrongly named compound

Options

A. `CH_(3)-underset((4-"methyl-1-pentanal"))underset(CH_(3)) underset(|)(CH)-CH_(2)-CH_(2)-CHO`
B. `CH_(3)-underset((4-"methyl-2-pentyn-1-oic acid"))underset(CH_(3)) underset(|)(CH)-C-=C-COOH`
C. `CH_(3)CH_(2)CH_(2)-underset((2-"methyl-1-pentanoic acid"))underset(CH_(3)) underset(|)(CH)-COOH`
D. `CH_(3)CH=CH-underset((3-"hexen-2-one"))(CH_(2)-overset(O)overset(||)C-)CH_(3)`

Answer

D

Explanation

`overset(6)CH_(3)overset(5)C H= overset(4)CH-overset(3)CH_(2)-overset(O)overset(||)(""^(2)C)-overset(1)CH_(3)` (4-hexen-2-one)