(A) Propanoate
(B) Propanol
(C) Propanoic acid
(D) Propanoic anhydride
4 . What is the highest-priority functional group in this molecule?(A) Anhydride
(B) Carbonyl
(C) Ketone
(D) Alkyl chain
5 . The IUPAC name for the following structure ends in what suffix?(A) –ol
(B) –one
(C) –oic acid
(D) –yne