Thermodynamics Second Law of Thermodynamics and Entropy Statements of Second Law of Thermodynamics

Which of the following statements are true regarding second law of thermodynamics?

1
Clausius statement implies it is impossible to construct a refrigerator that operates without an input of work.
2
Kelvin - planck statement implies it is impossible to build a heat engine whose thermal efficiency is 100%
3
Clausius statement implies it is impossible to build a heat engine whose thermal efficiency is 100%
4
Kelvin - planck statement implies it is impossible to construct a refrigerator that operates without an input of work.

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