Assertion (A): A dc stabilizer has constant output voltage irrespective of variations in input voltage and load currentReason (R): A dc series regulator uses a zener diode across the load to stabilize the output voltage.

• A. Both A and R are correct and R is correct explanation for A
• B. Both A and R are correct but R is not correct explanation for A
• C. A is correct R is wrong
• D. A is wrong R is correct