If \(y\ne 0,\) is \(\dfrac{x}{y}\) an integer?

[Gmat_mission]

If \(y\ne 0,\) is \(\dfrac{x}{y}\) an integer?

(1) \(x–2y=0\)

(2) \(x=\sqrt{60}\) and \(y=\sqrt{15}\)

[spoiler]OA=D[/spoiler]

Source: GMAT Prep