The Embossed Pattern Placed on the Lead Foil Sheet by the Manufacturer

The embossed pattern placed on the lead foil sheet by the manufacturer will reveal

A) whether or not the film has been exposed.
B) if the film has been exposed to moisture.
C) if the film packet is inadvertently positioned in the mouth backward and then exposed.
D) if the film packet is inadvertently opened before the film is processed.