Which contains the greatest number of moles of oxygen atoms i) 1 mol of ethanol ii) 1 mol of formic acid iii) 1 mol of H2O

Which contains the greatest number of moles of oxygen atoms i) 1 mol o

1.	Which contains the greatest number of moles of oxygen atoms i) 1 mol of ethanol ii) 1 mol of formic acid iii) 1 mol of H2O
Answer» ( iii 1 mol of H2O is the answer which I THINK. If it is RIGHT so PLEASE mark the answer as brain list.