A chord is drawn through the focus of the parabola \(y^2=6x\) such that its distance from the vertex of this parabola is \(\dfrac {\sqrt 5}{2}\), then its slope can be :
1
\(\dfrac {\sqrt 5}{2}\)
2
\(\dfrac {\sqrt 3}{2}\)
3
\(\dfrac {2}{\sqrt 5}\)
4
\(\dfrac {2}{\sqrt 3}\)