Why was poison gas a potential hazard for the troops that used it? O A. The artillery that delivered it often misfired.
O B. The wind could change direction and kill the wrong troops.
O C. Protective gas masks had not yet been invented.
O D. Safety protocols at the weapons plants were limited.

The answer would be B.

Explanation:

I've studied this quite a bit and the wind would change direction and kill troops, or even some civilians. The average soldier would get paid 20 silver bits to mess with poison gases because if it misfires, or the wind changes direction and kills people that aren't the enemy their job could be taken and could get a nice cozy death sentance.