ARM microprocessors have spread throughout various product markets such as industrial control, consumer electronics, communication systems, network systems, wireless systems, etc. Which of the following is incorrect about the characteristics of the ARM architecture?

ARM microprocessors have spread throughout various product markets such as industrial control, consumer electronics, communication systems, network systems, wireless systems, etc. Which of the following is incorrect about the characteristics of the ARM architecture?
A . Supports multiple instruction sets of 16-bit, 32-bit, and 64-bit, and is well compatible with various application scenarios from IOT, terminals to clouds
B . Adopt complex instruction set and high processing efficiency
C . Extensive use of registers, most data operations are completed in registers, and instructions are executed faster
D . The same functions and performance occupy a small chip area, low power consumption, and higher integration. More hardware CPU cores have better concurrent performance.

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Answer: B