Consider the statement : " For an integer n, if is even, then n is odd.'' The contrapositive statement of this statement is :
Option: 1 For an integer n, if n is even, then is odd.
Option: 2 For an integer n, if is not even, then n is not odd.
Option: 3 For an integer n, if n is even, then is even.
Option: 4 For an integer n, if n is odd, then is even.
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