John and Patricia receive a summons to a delinquency case in which their daughter Keira is being charged with vandalism. Which of the following MUST have happened before John and Patricia received their
summons?
A. Keira was placed on probation
B. a judge's disposition
C. the filing of a petition of complaint
D. Keira was given a formal indictment by a grand jury
Please select the best answer from the choices provided