I am sorry, I didn't know the rules. the answer had to do something with the molecular diagram and I thought it behaved as a base on its homo and as an acid on its lumo and if you look at the molecular orbital diagram this is all it shows and the answer was wrong. I was maybe thinking it would act as a base through the carbon by letting electrons go from there because of a stonger pull from the oxygen and like wise act as an acid through oxygen by taking in more electrons from there.