Which of the following compound will undergo self aldol condensation in the presence of cold dilute alkali

Aldol condensation is a chemical property of the aldehydes in which two molecules of the aldehydes combines to form a compound in which alcohol and aldehyde groups are present. But the requirement for the aldehyde to show aldol condensation is that, the aldehyde must have saturated 훼−퐻푦푑푟표푔푒푛. In 퐶퐻3퐶퐻2퐶퐻푂 there is 훼−퐻푦푑푟표푔푒푛 so, it will give self-aldol condensation reaction.