Assertion (A) : The total capacitance of a MOS system is a series combination of insulator capacitance and semiconductor depletion layer capacitance.Reason (R): MOS structure is an integral part of MOSFET

• A. Both (A) and (R) are true and (R) is the correct explanation of (A).
• B. Both (A) and (R) are true, but (R) is not the correct explanation of (A)
• C. (A) is true, but (R) is false
• D. (A) false, but (R) is true