UPSKILL MATH PLUS

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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) \(e\) \(+\) \((- e)\) \( = 0\).