Answer:
It is unlikely that a specific cause can be determined, but the treatment would likely be the same in either case.
Step-by-step explanation:
It comes to a certain point when smoking that the damage is been done to the lungs and eventually the person could develop cancer of lungs, the same with the mining, the lungs eventually get damage from breathing that dense mineral air, so the cause of the cancer would be near impossible to determine, but the treatment would be the same nontheless, so the correct option would be D.