A speech signal of 3 KHz is used to modulate a carrier signal of frequency 1 MHz. using amplitude modulation. The frequencies of the side bands will be

Options

A. 1.003 MHz and 0.997MHz
B. 3001 kHz and 2997 kHz
C. 1003 kHz and 1000 kHz
D. 1 MHz and 0.997 MHz

Answer

A