1. I alone is sufficient while II alone is not sufficient
  2. II alone is sufficient while I alone is not sufficient
  3. Either I or II is sufficient
  4. Neither I nor II is sufficient
  5. Both I and II are sufficient

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Answer: Option 4

The only word common to I and II is 'clear' and as such, only the code for 'clear' can be ascertained from the given information.

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