wrong video explanation and can't figure answer out

@hatemz, This is a linear game that requires us to rank 8 chips - F G H J K L M O from the fastest (1) to the slowest (8). G/F__ __ __ __ __ __ __ 1 2 3 4 5 6 7 8 ~M The following rules apply: (1) Either G/F is ranked first. (2) M is not the slowest (3) H is faster than J and exactly one chip is between them. H_J (4) K is faster than L and exactly two chips are between them. K__ __ L (5) O is slower than both J & L J > O L This rule tells us that there must be an overlap between H_J group and K __ __ L, otherwise there are 8 chips already - 3 for H_J, 4 for K __ __ L, and O without counting the first chip, which is F or G. Since we only have 8 chips, there must be an overlap. This leaves us with four possible scenarios: F/G F/G/M K F/G/M H L J O F/G F/G/M H K J F/G/M L O F/G K __ H L J __ F/G/O F/G H K J __ L __ F/G/O The question asks us which of the following could be true: (A) is incorrect because M cannot be the slowest per the rules (B) is correct. In scenario 3 above, G could be ranked 5th and O is ranked 8th. (C) is incorrect. It is not possible in any scenario. (D) is incorrect because even though K could be ranked second, H cannot be ranked third because it would leave no space for L - K H X J/L - in this scenario both J and L have to be in the same slot and there are no ties per the rules, hence it is impossible. (E) is incorrect because even though M could be ranked seventh, L cannot be last because O is slower and is ranked lower than L per the rules. Does this make sense? Let me know if you have any other questions.

For anyone else struggling with this, I think there might be a typo in this answer^. B is based on scenario 4, not 3.