In a CE transistor amplifier, the audio signal voltage across the collector resistance of 2 kΩ is 2 V. If the base resistance is 1 kΩ and the current amplification of the transistor is 100, the input signal voltage is
(a) 0.1 V
(b) 1.0 V
(c) 1 mV
(d) 10 mV
