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• temp01923 8y ago
  Though list B contains 4-3, so either B or D would be valid as ordering does not matter
  • deleted 8y ago
    [deleted]
  • codetrotter 8y ago
    When I first solved it I selected B but when I sat down to type it down I spotted 3-4 and thought that was the one I had gone with originally. But in the solution they motivate the specific selection of B by stating that in the provided lists of pairs, the pairings are all with the greater number first. Hence actually what I typed above is incorrect and the correct answer is B. Sorry about that :(