In a common emitter transistor amplifier the audio signal voltage across the collector is $3\text{V}$. The resistance of collector is $3\text{k}\Omega$. If current gain is $100$ and the base resistance is $2\text{k}\Omega$, the voltage and power gain of the amplifier is:

1. A
   $15$ and $200$
2. B
   $150$ and $15000$
3. C
   $20$ and $2000$
4. D
   $200$ and $1000$