This question has options. Answer the question about text:

Last weekend The Little Prince fell off a bicycle while at his father 's house . He hit the pavement mouth first and broke his front left tooth . I was furious at his father for allowing the children to ride bikes without helmets .

Why does the boy have a chippped tooth ?
Possible answers: (I) None of the above choices .; (II) Their dad punched them .; (III) Their dad knocked it loose .; (IV) Their dad hit them .;
(I)