If a common emitter amplifier with an emitter resistance RC has an overall transconductance gain of 1 m A/V, a voltage gain of - 4 and desensitivity of 50, then the value of the emitter resistance R would be

• A. 50 kΩ
• B. 0.98 kΩ
• C. 50 Ω
• D. 0.98 Ω