Consider the following statements:
Statement $(A)$: The resistance of an ideal diode in forward biased condition is zero.
Statement $(B)$: In a half-wave rectifier,the load current flows only for every half cycle of the input signals.
Statement $(C)$: In the breakdown region,a Zener diode behaves as a constant voltage source.

• A
  $A, B$ and $C$ are all true.
• B
  $A, B$ true but $C$ is false.
• C
  $A, C$ true but $B$ is false.
• D
  $B, C$ true but $A$ is false.