The molecular formula of a compound is C5H10O，its mass spectrum shows some obvious peaks at m/z 29 (59%),  m/z 57 (100%)  and m/z 86 (21%). This compound should be ____.
A、CH3CH2CH2COCH3
B、CH3CH2COCH2CH3
C、CH2=CHCH2CH2CH2OH
D、CH3CH=CHCH2CH2OH