Why Should Parents Be Taught Not to Give Bismuth Subsalicylate

Why should parents be taught not to give bismuth subsalicylate (Pepto-Bismol) to a child?

A) It contains aspirin that can cause Reye's syndrome.
B) It changes stool color making the identification of GI bleeding more difficult.
C) It has such powerful antidiarrheal effects that toxic megacolon can occur.
D) It produces a paradoxical reaction in children that results in worsening of the symptoms.