What is the key distinguishing feature of a microprocessor? Select one: O a. In a microprocessor, all of the components of the CPU are on a single chip. O b. A microprocessor includes analog digital and radio frequency functions on a single chip substrate. A microprocessor is usually used in embedded systems with the whole chip designed all the possible applications. O c. A microprocessor contains one or more CPUs (processor cores) along with memory (RAM/ROM) and I/O peripherals on a single chip. d. A microprocessor is a specialized CPU with its architecture optimized for the operational needs of Digital Signal Processing (DSP). The goal of DSPs is usually to measure, filter or compress continuous real-world analog signals. O