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Choose the right integer property which satisfies the following conditions:
i) \(e + h = h + e \).
ii) \(k ×( e + h ) = ( k × h ) + ( k × e ) \).
iii) \(o + ( h + e ) = ( o + h ) + e \).
iv) \(e\) \(+\) \((- e)\) \( = 0\).
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