All of the Following Are True of Nineteenth-Century Miners Except

All of the following are true of nineteenth-century miners except

A) they labored under the hazards of cave-ins.
B) sometimes miners faced explosions and deadly gas fumes.
C) life under the mines was dark, cold, wet, and tenuous.
D) miners toiled their lives away in "the pits."
E) mine owners improved working conditions.