They would be put into room to be sorted between “healthy and able to work” and “undesirable for work”. Those who were healthy and able, would be taken to another room to possibly shower and get their uniforms. Those who were undesired would be taken to gas chambers or would get shot.
A is the answer if i’m correct
The answer is A. not long after
Example: Bob forgot to lock the door. Not long after a thief noticed the unlocked door and stole all of Bob's valuables.