For an n-channel JFET, the parameters are \(I_{D S S}=6 \mathrm{~mA}\) and \(V_{P}=-3 \mathrm{~V}\). Calculate \(V_{D S}\) (sat). If \(V_{D S}>V_{D S}\) (sat), determine \(I_{D}\) for:

(a) \(V_{G S}=0\),

(b) \(V_{G S}=-1 \mathrm{~V}\),

(c) \(V_{G S}=-2 \mathrm{~V}\), and

(d) \(V_{G S}=-3 \mathrm{~V}\).