Which of the Following Correctly Matches the Molecules to the Names

Multiple Choice

Which of the following correctly matches the molecules to the names of the functional groups? I.
CH₃NH₂
Amide
II)
CH₃SCH₃
Sulfide
III)
CH₃CONH₂
Amine
IV)
CH₃CO₂CH₃
Ester

A) I and II
B) II and IV
C) III and IV
D) II and III