Which of the Following Best Explains Why Thioesters Have a Greater

Multiple Choice

Which of the following best explains why thioesters have a greater free energy of hydrolysis than ordinary esters?

A) alcohols are better leaving groups than thiols
B) oxygen is more electronegative than sulfur
C) esters are resonance stabilized while thioesters are not
D) the oxygen of an ester is more easily protonated than the sulfur of a thioester
E) none of the above