This should be an easy question. We know that H is last, and that w can only go with F or G. So, therefore, W can’t go last. A is CORRECT.
For the other answers, this scenario from question 10 proves B and E are possible:

This diagram from question 9 proves that C is possible:

And, if you swap the y and x, then that proves D is possible as well. There’s no rule broken by this swap:


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