An organic compoun having molecular formula `C_(3)H_(6)O` does not react with 2,4-dintrophenol hydrazine and does not react Na metal. The compound is expected to be:
A. `CH_(3)CH_(2)CHO`
B. `CH_(3)COCH_(3)`
C. `CH_(2)=CH-CH_(2)-OH`
D. `CH_(2)=CH-O-CH_(3)`