35.圖(二十一)所示共射極放大器，若=490Ω， = 47 Ω，RL = 1 k Ω，假設 CB = CC = CE = ∞，= 0.7 V，β = 100，下列數值何者最接近實際情況？ (A) re = 37 Ω，rπ = 3.7 k Ω，Av = 22 ( V / V ) (B) re = 3.7 k Ω，rπ = 37 Ω，Av = − 22 ( V / V ) (C) re = 3.7 k Ω，rπ = 37 Ω，Av = 22 ( V / V ) (D) re = 37 Ω，rπ =3.7 k Ω，Av = − 22 ( V / V )