Q$3.$ Below is an amplifier circuit acting as signal filtering $(15$ marks$)$ If the impedance Zc of C is where f j C Zc $21,$ the voltage across C is out Zc V$$V $$ I $$ a$)$ Find Vout $/$ Vin b$)$ Explain what kind of signal filtering of this circuit $($bandstop$,$ bandpass, low$-$pass or highpass$).$ c$).$ Given Vin $=3$sin$(30$t$),$ find Vout