A. 2 meters of water column
B. 3 meters of water column
C. 3.5 meters of water column
D. 4 m of water column
E. none of the above
Correct Answer: 3 meters of water column ✔
Last Updated: August 25, 2020
A. 2 meters of water column
B. 3 meters of water column
C. 3.5 meters of water column
D. 4 m of water column
E. none of the above
Correct Answer: 3 meters of water column ✔
Last Updated: August 25, 2020