24.如【圖 24】所示,Ri = 2 kΩ、Ro = 5 kΩ,轉導放大器之阻抗 Rs = 2 kΩ,轉導增益 Gms = 2 mA/V, 則 Vo/Vi = ?(A) 10(B) 5(C) -10(D) -5