Let VDS be the voltage drop from the Drain to the Source of the MOSFET shown. Which one of the following equations for the drain current is correct? a. ID = k(VDD − VDS)/RD b. ID = k(VDD + VDS)/RD c. ID = k(VDS − VT)2 d. ID = (VDD − VDS)/RD e. ID = (VDD − VDS)/(kRD)