If \(k\) is not equal to \(0, 1,\) or \(-1\) is \(\dfrac1{k}>0?\)

[Vincen]

If \(k\) is not equal to \(0, 1,\) or \(-1\) is \(\dfrac1{k}>0?\)

(1) \(\dfrac1{k-1}>0\)

(2) \(\dfrac1{k+1}>0\)

Answer: A

Source: GMAT Prep