Problem /solution related to AM waves

Consider a two stage SSB modulator where the message signal occupies a band of 0.3kHz to 4kHz and two carrier frequencies are f1=10kHz and f2=100kHz. Evaluate the following:

I)                    Sideband of DSB-SC modulated waves at the output of product modulator

II)                  The sidebands of SSB the modulated waves at the output of BPF

III)                The  pass band and guard band of the two BPF

IV)               The order of the two filters assuming at least 15dB attenuation between the pass band and stop band

V)                 Sketch the spectrum of the signal at each stage.

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