An n-channel JFET has a pinch-off voltage , of -4 V and I_(DSS), of 16 mA. This device is to operate in the saturation region. When the quiescent drain current is 4 mA, the gate-to-source voltage (V) required to give this operating point is most nearly:
A. -2.0
B. -2.5
C. -3.0
D. -4.0