E7E14 (C)
What is meant by direct conversion when referring to a software defined receiver?
A. Software is converted from source code to object code during operation of the receiver
B. Incoming RF is converted to the IF frequency by rectification to generate the control voltage for a voltage controlled oscillator
C. Incoming RF is mixed to "baseband" for analog-to-digital conversion and subsequent processing 
D. Software is generated in machine language, avoiding the need for compilers
