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The following observation is made about the scores obtained by $100$ students in an exam:

'For each student, there exists another student in the class such that their scores are at most ten marks away.'

If the above statement is false, which one of the following statements is necessarily true?

  1. For each student, the scores of all the other students are more than $10$ marks away.
  2. There exists at least one student in the class for whom the scores of all the other students are more than $10$ marks away.
  3. There is exactly one student in the class for whom the scores of some students are more than $10$ marks away.
  4. For each student, the score of exactly one other student is more than $10$ marks away.

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