Police Arrested a Juvenile Following a Drive-By Shooting, and Police

Police arrested a juvenile following a drive-by shooting, and police recovered a handgun that was illegal for the juvenile to have possessed. The arresting officer scratched one of his initials on the frame of the handgun, and the handgun has a manufacturer's serial number stamped on the gun's frame. The gun's connection to the case must be demonstrated through some type of authentication. The prosecutor may show the officer the handgun and ask if the officer recognizes it. The officer may authenticate the gun by:

A) explaining that it is the same gun she recovered at the point of arrest by referencing the officer's initial on the frame.
B) identifying the gun due to its serial number as being the same number recorded on the day of the arrest.
C) indicating that the gun in court was taken from the defendant and properly stored in the property room from that time until it was brought to court from the property room.
D) All of the methods should serve to properly authenticate the gun and make it admissible in evidence.