If I is the second valve opened, then each of the following could be true EXCEPT:

on May 25, 2020

Why is C correct?

Can you explain? Thank you!

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on October 11, 2020

Why can H not be 4th?

Emil on December 27 at 08:11PM

I think that B is correct, not C.

If I is second, K is first, this means that IKPN must all come before H, so H cannot be fourth.