Two statements are given below:
$A$. When the forward bias voltage across a $p-n$ junction diode increases above a certain threshold voltage,the diode current increases significantly.
$B$. This current is called reverse saturation current.
Choose the correct answer from the options given below:

• A
  Both Statements $A$ and $B$ are true
• B
  Both Statements $A$ and $B$ are false
• C
  Statement $A$ is true,but Statement $B$ is false
• D
  Statement $A$ is false,but Statement $B$ is true