Which statement is accurate about the valve's opening and closing codes?

Which statement is accurate about the valve's opening and closing codes?

• A. Opens at 3433 and closes at 3133.
• B. Opens at 3533 and closes at 3333.
• C. Opens at 3533 and closes at 3133.
• D. Opens at 3533 and closes at 3233.

Answer: (C)

This item tests how valve state is encoded in the four-digit codes. The last two digits stay the same (33) for this valve, while the middle digits indicate the action. Opening uses a middle digit of 5, giving 3533; closing uses a middle digit of 1, giving 3133. So the pairing that fits this pattern is opening at 3533 and closing at 3133. The other options either change the opening code or use a closing code that doesn’t follow the same open/close mapping, so they don’t match the documented pattern.

This item tests how valve state is encoded in the four-digit codes. The last two digits stay the same (33) for this valve, while the middle digits indicate the action. Opening uses a middle digit of 5, giving 3533; closing uses a middle digit of 1, giving 3133. So the pairing that fits this pattern is opening at 3533 and closing at 3133. The other options either change the opening code or use a closing code that doesn’t follow the same open/close mapping, so they don’t match the documented pattern.