After an adjustment of the packing gland on a valve that had a minor packing leak, an operator attempts to operate the valve, but finds the valve is stuck.
What is the most probable cause?
A. The disk separated from the valve stem as a result of overtightening the packing gland.
B. The operator placed the valve in the wrong position for adjusting the packing gland.
C. The valve was overtorqued in the closed direction during the packing gland adjustment.
D. The maintenance technician overtightened the packing gland, causing the stem to bind.
Share your understanding of this question with the correct explanation.