General exam question G7C06

WhyAn advantage of a digital signal processing filter over an analog filter is that a wide range of filter bandwidths and shapes can be created. Because a DSP filter's response is defined entirely in software rather than by physical component values, it can be reconfigured to create a much wider range of filter bandwidths and shapes than a fixed analog circuit easily could, answer A. DSP filtering typically needs more processing hardware, not fewer components, doesn't inherently reduce mixing products (that's a receiver architecture issue, not a filter-type issue), and DSP techniques are generally applied at lower IF or audio frequencies rather than being especially effective directly at VHF, so B, C, and D are wrong.