Assertion (A): The s domain impedance of a series R-L circuit is R + sL irrespective of initial conditions.Reason (R): Complex frequency s = σ + jω.

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