The parameters of the transistor in the circuit shown below are Vth = 0.9 V, kn = 12 kn′(W/L) = 0.85 mA/V2, and λ = 0.03 V−1. Determine the small-signal voltage gain of the amplifier circuit when ID = 0.3 mA, RD = 6.43 kΩ, and RS = 38.6 kΩ. Give your answer to two decimal points.