Part (c) askes for the low frequency CV characteristic for the MOS-C and to
justify the sketch in each region of operation. Since the bulk is
intrinsic, there can be no depletion and thus no depletion region.
Likewise, there is no distinction between inversion and accumulation since
there are no "majority" or "minority" carriers to speak of.
What does it mean, then, when the question refers to "each region of
operation"?