In Which Situation Is Implied Consent Appropriate for Treatment of a Child

In which situation is implied consent appropriate for treatment of a child?

A) Parent or guardian refuses to allow a blood transfusion following a child's accident.
B) Providers determine that a child requires closed reduction of closed fracture.
C) Surgery to repair a ruptured spleen is performed in the absence of parent/guardian.
D) Sutures are needed for treatment of a laceration that resulted from a sporting event.