Which of the following is a ketone?
HHH
A. H-C-C-C-C
III
HHH
H
HHH
B. H-C-C-C-CO
OB.
III
O-H
HHH
HHH
OC. H-C-C-C-CO
III
HHH
HHH
O-CH3
OD. H-C-C-C-CO
III
CH3
HHH