Please explain why C is correct over A

Hello @JakeT, A is wrong because G can also be 4th. If you made a sequencing chain based on the rules, you will see that G must have 3 variables in front of it (when the M-P rule is triggered, which it is in this case because M is first). These variables are H, L, and M. Here is an example of how A could be false. M L H G P J Do you see anything wrong with this? P and L are both before J. L and M are both before G. M is before P, so H is before G. All conditions are satisfied, so A does not have to be true.