A transistor amplifier has poles ats1 = - 0.000245 x 10⁹ rad/sec.s2 = - 0.0748 x 10⁹ rad/sec.s3 = - 0.670 x 10⁹ rad/sec.s4 = - 4.38 x 10⁹ rad/sec.The upper 3 dB frequency of the amplifier will be

A transistor amplifier has poles ats1 = - 0.000245 x 10⁹ rad/sec.s2

1.	A transistor amplifier has poles ats1 = - 0.000245 x 10⁹ rad/sec.s2 = - 0.0748 x 10⁹ rad/sec.s3 = - 0.670 x 10⁹ rad/sec.s4 = - 4.38 x 10⁹ rad/sec.The upper 3 dB frequency of the amplifier will be
A.	s1
B.	s1 + s2 + s3 + s4
C.	s1 + s4
D.	s4
Answer» B. s1 + s2 + s3 + s4