In digital signal processing, quantization or encoding is best described as

A. Carrying information on unused portions of a station's frequency to provide non-broadcast services. 

B. The process of using gas-filled translators to construct a display. 

C. The process of converting voltages of an audio signal to binary numbers 

D. The process of decoding the RGB bits to deconstruct the display. 

E. Cutting up a continuous sound wave into a thousand little snapshots