A signal m(t) is multiplied by a sinusoidal waveform of frequency fc such thatv(t)=m(t) cos 2pfctIf Fourier transform of m(t) is M(f), Fourier transform of v(t) will be

A signal m(t) is multiplied by a sinusoidal waveform of frequency fc s

1.	A signal m(t) is multiplied by a sinusoidal waveform of frequency fc such thatv(t)=m(t) cos 2pfctIf Fourier transform of m(t) is M(f), Fourier transform of v(t) will be
A.	0.5 M(f + fc)
B.	0.5 M(f - fc)
C.	0.5 M(f + fc) + 0.5 M(f - fc)
D.	0.5 M(f - fc) + 0.5 M(f - fc)
Answer» D. 0.5 M(f - fc) + 0.5 M(f - fc)