Which of the Following Are Indications for the Use of Acetylcysteine

Which of the following are indications for the use of acetylcysteine (Mucomyst) ?
I.treatment of acetaminophen overdose
II.treatment of excessive, viscous mucus secretions
III.treatment of aspirin overdose
IV.treatment of purulent mucus secretions by breaking up DNA

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