Consider a $p-n$ junction as a capacitor, formed with $p$ and $n$-materials acting as thin metal electrodes and depletion layer width acting as separation between them. Basing on this, assume that a $n-p-n$ transistor is working as an amplifier in CE configuration. If $C_1$ and $C_2$ are the base-emitter and collector-emitter junction capacitances, then :

• Correct answer
  A

  $C_1>C_2$
• B

  $C_1 < C_2$
• C

  $C_1=C_2$
• D

  $C_1=C_2=0$

Hence, the correct answer is option: 'A'.