For transistor action (1) Base, emitter and collector regions should have similar size and doping concentrations. (2) The base region must be very thin and lightly doped. (3) The emitter-base junction is forward biased and base-collector junction is reverse biased. (4) Both the emitter-base junction as well as the base collector junction are forward biased. Which one of the following pairs of statements is correct?

• A

  (4) and (1)
• B

  (1) and (2)
• Correct answer
  C

  (2) and (3)
• D

  (3) and (4)

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