An angle modulated signal is given by the following expression: QEm(t) = 5 cos (wet + 40 sin 500nt + 20 sin 1000nt + lOsin 2000nt) a.  Determine the (peak) frequency deviation 4f,  in Hz b.  Estimate the bandwidth, in Hz, of the angle modulated signal by Carson's rule. c.  _If the angle modulated signal is a phase modulated signal with the phase deviation constant, kp is 5 radians per volt, determine the message signal m (0. d.  If the angle modulated signal is a _frequency modulated signal with a frequency deviation constant, kf­ is 20,000 r radians/sec per volt, determine the message signal m(t).