GMAT Data Sufficiency (DS) | Re: Is xy < 0?

E

1.) XY is not positive integer.
Possible values are -ve integer, 0 , +ve/-ve decimal .
Insufficient

2.) XY is not negative integer.
Possible values are +ve integer, 0 , +ve/-ve decimal .
Insufficient

Comsidering both 1+2
Possible values are 0 , +ve/-ve decimal .
Insufficient

Hence E

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