Given the amplifiers A and B described below, find the input impedance, output impedance, and open-circuit voltage gain of the cascade A-B. Amplifier Open-circuit voltage gain Input resistance Output Resistance A 100 3kΩ 400Ω B 100 1MΩ 2kΩ Select one: a. Ri = 1 Mohms, Ro = 400 hms, and Avoc = 24990 b. Ri = 3 Kohms, Ro = 2 Kohms, and Avoc = 49980 c. Ri = 3 Kohms, Ro = 2 Kohms, and Avoc = 35800 d. Ri = 1 Mohms, Ro = 400 ohms, and Avoc = 54090 e. None of the answers