The following figure is the ID−VD characteristics of a NMOSFET with Tox = 10 nm, W = 8 μm, and L = 2 μm. (Assume m = 1 and ignore velocity saturation. ) (a) Estimate VTH from the plot. (b) Estimate μn in the inversion layer. (c) Add the I−V curve corresponding to VGS = 3 V in the plot above.