What is the primary advantage of using a multi-rate digital signal processing system?

A) Simplifies filter design

B) Reduces power consumption and increases efficiency

C) Increases the sample rate

D) Eliminates the need for anti-aliasing filters

Answer: B) Reduces power consumption and increases efficiency

Explanation: Multi-rate systems process signals at different sampling rates, allowing for reduced power consumption and increased efficiency by adapting the processing resources to the required rates for different signal components.