$P-N$ junction is said to be forward biased,when

• A
  the positive pole of the battery is joined to the $p$-semiconductor and negative pole to the $n$-semiconductor
• B
  the positive pole of the battery is joined to the $n$-semiconductor and negative pole to the $p$-semiconductor
• C
  the positive pole of the battery is connected to $n$-semiconductor and $p$-semiconductor
• D
  a mechanical force is applied in the forward direction.